Solo 451 Mist Blower


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4 out of 5 stars Rating: 4.1

30 Reviews | 53 Q&A


{ $599.99
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Solo 451 Mist Blower mist blower (backpack) $599.99
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For large order quotes, please call us at 1-866-581-7378.

Solo 451 Mist Blower

The Solo 451 is brand new and replaces the older Solo 450 model.

This motorized mist blower features a 2-cycle, 66.5cc, 4.3HP low-emission Solo engine and fan system. Also featured on the Solo 451 is an ergonomic carrying frame and quick-release straps. The polyethylene tank with UV inhibitors has a capacity of 3.4 gallons. A 4-position liquid dosage control permits you to have a selectable output from 0.12 to 0.89 GPM.

You can use this mist blower in nurseries, orchards, vineyards, your home, or for mosquito control.

  • Equipped with 2-cycle, 66.5cc, 4.3HP Solo engine and fan system
  • Ergonomic carrying frame and quick-release padded straps
  • 3.4 gallon tank capacity
  • 4-position liquid dosage control allows selectable output from 0.12 to 0.89 GPM
  • Misting range is 40' horizontal and 35' vertical for hard-to-reach spraying areas


Product Documents

How to Assemble the Solo 451 Backpack Mist Blower:

How to Use the Solo 451 Backpack Mist Blower:

The main difference between the old 450 and the newer 451 model is the larger motor, the Solo 451 has a 66.5cc motor instead of the 53cc on the older 450.

Replacement parts that are available:

Solo Screw (#0018421)

Solo Screw M5X20 (#0018363)

Solo Ignition Coil Complete (#2300204)

Solo Exhaust Gasket (#2061103)

Solo Muffler (#2500739)


Rating Snapshot

5 stars   14
4 stars   11
3 stars   1
2 stars   1
1 star   3

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Average Customer Rating
4 out of 5 stars (30)

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Most Helpful Customer Reviews
  • 55 of 57 people found this review helpful:

    3 of 5 stars  Compared to Sthil SR-450...
    By Patrick in Richmond, VA on 09/19/2012
    Verified Purchase

    I have used Solo and Sthil mistblowers for years in the pest control industry. For many years I leaned towards Sthil and the SR-420, but when the Sthil SR-450 hit the market and showed many major flaws (regular leaks, exhaust clogging) I begon to explore other options. I tried many other brands, before revisiting Solo and trying out this newer model. I would say that my biggest setback is the high price, although this website offered a killer deal. Even this price is $100 more expensive than the Sthil SR-450. That said, the Solo has never broken down on me. It runs a little rich, its a little louder than many others, but overall its a great unit if you are looking for an alternative to Sthil.

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  • 49 of 51 people found this review helpful:

    5 of 5 stars  Solo 451 Mosquito Fogger/Mist blower
    By Steve in Dowagiac, Michigan on 04/17/2012
    Verified Purchase

    Awesome machine!! Well worth the money if you live in an area where mosquitos make enjoying the pool or hot tub in the evening impossible. Last year I paid a major Pest Control company $100.00 a month to fog my property to control the mosquitos, it worked great but we were at the mercy of a company who was not prompt, missed appointments or rain delays = Mosquito re-infestation forcing us inside the house. I am now in control of my pest control thanks to, I purchaced a gallon of Talstar P concentrate to go with my new Blower/Mister and it appears to work wonderfully, I sprayed my yard 2 weeks ago and have not seen 1 mosquito since, that is saying something considering I live 1 block from a large lake in Southwest Michigan. I highly recommend the Solo 451 Blower and Talstar P insecticide, I received my order quickly, I highly recommend ordering from, I will definitely be a repeat customer.

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  • 26 of 28 people found this review helpful:

    5 of 5 stars  Shale Ridge Farm LLC
    By Blair in Shamokin PA on 08/31/2011
    Verified Purchase

    The mist blower works as expected. No problems, so far. I also use Solo's backpack sprayers and have had many years of good service with them.

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  • 26 of 26 people found this review helpful:

    5 of 5 stars  Mosquito Free
    By Jeff in Memphis, TN on 01/14/2015
    Verified Purchase

    This works. It isn’t cheap, but it works. I was rather hesitant to spend this kind of money, but my desire to use my backyard in the summer won out. We live in the Memphis, TN area, in a wooded lot with a lot of bushes: i.e. mosquito heaven. I would get multiple bites just walking to the mailbox and back, let alone when our three kids would play in the backyard. If we wanted to spend any time outside, we had to drench ourselves with bug spray, otherwise they feasted. I finally got fed up staring longingly at my backyard through the windows and started looking into ways I could control the mosquitoes in our yard. I bought one of those handheld propane foggers, and it sort of worked for a short time. There wasn’t a residual, and the mosquitoes found us soon after. Local companies wanted up to $150/month to fog my yard, and I was just about to break down and do that when I figured that this fogger would pay for itself pretty quickly if I used it for just a couple years. I’m glad I did: mosquitoes are hardly a problem anymore in my backyard. This isn’t a 100% solution for me, but we can deal with a bite or two every once in a while in order to go outside whenever we want without bug spray. It’s almost strange to go outside now without mosquitoes swarming us. If I go too long between treatments, the kids ask me to kill the bugs now. I’m still trying to find the right combination of concentrate to water, saturation of my bushes, frequency of fogging, and dosage setting on the fogger. It seems like the bug population starts to pick up after about 2-3 weeks, so I’m not sure if that’s me, or just the reality of where I live. The “problem” is that I only had to fog a handful of times (once I got it this past summer) in order to control the bugs, so I didn’t have many opportunities to tweak how I fogged. The machine runs really well, and starts pretty easily. It is heavy: 4 gallons of water and fuel, on top of a 25 lbs engine and that’s 50+ lbs. Once you get it on your back it’s comfortable, but it can be awkward trying to get it there. You also get an additional benefit of being able to use this to apply Talstar to the outside of your house too. I did that while I was treating the yard, instead of using a pump sprayer inside and out like I normally have and we haven’t had any bugs inside. I can’t speak to the longevity as I just got it this past summer. But, if you something to control the mosquitoes in your yard, this is it.

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  • 23 of 24 people found this review helpful:

    4 of 5 stars  Good but a few things could be better
    By Homeowner in Arkansas on 07/16/2014

    Bought this primarily to spray all of the landscaped and other surrounding area around our house for mosquitoes. First the cons... Based on my experience with farm spraying and from reviews of others, I immediately bought the optional pump. I'm glad I bought it and in fact think it should be standard equipment. There is no way you will get an even spray volume distribution by the standard gravity feed unless you are spraying small plants that can be done with a low and constant nozzle height. And you can't spray the upper parts of tall plants or surfaces at all unless you have the pump. The pump also has a return line to the tank that serves to keep the spray solution mixed. This website doesn't have the optional pump listed, but informed me by email that it was available from them. I had already found it elsewhere in stock with easy automated ordering before I received the email reply from this site, and it arrived before the blower (but I was pleased with how quickly this site shipped the blower as well). Be aware that the optional pump is about $125 (delivered price). It also may be a bit of a challenge for some to install if you aren't at least somewhat of a handyman type. The other problem I encountered is the flex hose doesn't attach securely to the elbow. It slips over a barbed male nipple and is secured by a hose clamp. But the hose barbs are too small (hardly a barb at all) and it's hard to get the clamp tight enough (it's plastic and I was afraid of stripping the screw threads in the plastic or breaking the plastic band if I tightened the clamp any tighter). The first time of use the flex hose came off almost immediately. I put it back on and tightened the clamp tighter, and it still only lasted about half way through the first spray tank load before coming off again. So I put it back on, tightened the hose clamp, and then put two small screws through the flex hose and elbow nipple, adjacent to the hose clamp. That fixed the problem. Other than these issues, which I was satisfactorily able to overcome, I really like this blower. I've only had it about 2 weeks and have only sprayed everything twice (but multiple tank loads each time), so I can't speak first hand to longevity, but the engine seems to be well made, high compression, and starts on first or 2nd pull every time so far. I like that the spray tank and pump system is very easy to rinse/flush when done for the day.

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Most Recent Customer Reviews
  • 1 of 1 people found this review helpful:

    4 of 5 stars  Great but Not so Great
    By Ryan in Newburyport MA on 07/31/2017

    I have used the solo mist blower 451 for 2 years now. Pros runs great! Cons straps snapped after a year, the nozzle attachment keeps blowing off, lost 2 already. Bolts vibrate loose after much use and leaks all over you. Thank goodness I use Organic. Must always check and re tighten and reseal top cap inside rubber gasket wears away and leaks. Mind you I own a tick and mosquito control business and have done about 300 applications with this one machine. That's why I give 4 stars. I just wish they had a standard replacement parts kit. Straps, nozzle attachment kit, gasket etc. That would be ideal. I would recommend to a friend.

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  • 1 of 2 people found this review helpful:

    4 of 5 stars  Works great the choke was hard to figure out hard to aim up.
    By Tim in Cottontown Tn on 07/24/2017

    works great start is a little hard to get use to and the blower tube is hard to aim straight up in the air, When the choke is off it should be at a 11 to 5 angle, Vertical to apply the choke !

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  • 2 of 2 people found this review helpful:

    4 of 5 stars  Solid machine
    By Stephen in Landenberg, PA on 07/08/2017

    After reading reviews I considered this and the Stihl unit. I wanted to buy the Stihl since I have their backpack blower, weed wacker and two chain saws but after reading the tank would leak, I went with the Solo. This is a well built machine. The assembly instructions are a bit confusing but if you assemble it right, the air hose will not come apart as some have complained. Since you're carrying 3 gallons of water and the blower on your back it is heavy. I would like to see better back padding, thicker straps and a more comfortable throttle with a trigger lock. My Stihl blower has better padding, a nice throttle grip and a throttle lock and I can wear it all day. After spraying two tanks today I'm a bit sore. I like that you can unscrew the hose from the tank to rinse it out easily. It starts right up but follow the instructions. You don't yank on it like most power equipment. A slow steady pull is all it takes. Finally, I bought this as a mosquito control kit which came with four different chemicals. One was granules that are supposed to dissolve in water but didn't and clogged up the chemical feed line. I won't be using them anymore-just the liquids. Make sure you mix everything in a container and then add it to the tank. Don't mix in the tank.

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Solo 451 mist blower
    By Ron in Gilroy California on 05/30/2017

    I have 4 of the 450 solos must blowers. Up graded to 451. Great product for Vineyard applications. Great price too. Thanks

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  • 2 of 2 people found this review helpful:

    4 of 5 stars  Dependable starts; needs top handle and foot pad
    By William in Crete, ILL. on 05/16/2017

    Starting and lifting this thing into position is a little awkward. I'm really surprised that they didn't build in some type of foot platform to step on when pull-starting; holding the blower down while pulling the cord is very awkward. Also, my Echo backpack sprayer has a handle built into the fill cap, which I use to lift from the sprayer off the ground after filling. I realize that this sprayer is heavier when filled. However, a handle extending up from the frame would be welcome.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Great mist blower
    By Jeremey in Dover on 05/13/2017

    Works great. I'd recommend that you get the booster pump if you have any trees. I use it with Talstar for mosquito control. Works great. Pays for itself in a year if you spray all summer.

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  • 3 of 4 people found this review helpful:

    4 of 5 stars  Pleased with the Solo 451 mist blower
    By Randy in Polk City, Iowa on 03/06/2017

    Blower arrived in great shape. It was purchased to spray a small home orchard. With the booster pump added it reached the tops of the trees as advertised. The motor started with a couple pulls. I antisipated a heavy machine and with the added chemicals it is indeed. I am fairily mechanical. The photo instructions to add the booster pump could use improvement. The photos are not very clear. One of the hoses was too short and required purchasing a new length of hose.

    Expert Response   Expert response:
    Thank you for your comments! We apologize that the manufacturer instructions are unclear. There are different hose lengths included, so one will be too short if they are installed in the opposite placement. Please let us know if we can further assist you anytime. We appreciate your feedback and your business!

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  • 3 of 3 people found this review helpful:

    2 of 5 stars  Cheaply Built
    By Zj in palm coast on 12/19/2016

    I bought this with the intention to treat up into trees. They say aprox 30ft and the tube and handle will not allow it to move into the upright position. Also 15-20 feet would be about as far as you can treat.

    Expert Response   Expert response:
    Thank you for your comments! You will definitely lose distance when using the Solo 451 above horizontal. You can purchase the Liquid Booster Pump for added vertical reach:

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  solo 451 - Does Exactly What You Expect, Does it Well
    By Kevin in Plymouth Massachusetts on 06/27/2016

    I live in a heavily wooded area in Southeast Massachusetts, we have a built in pool and with the short summer season here we want to spend s much time out doors as possible. Because of the wooded area the mosquitos are brutal, I purchased the Solo 451, and I am very happy I did. It works great controlling the mosquitos. I followed directions, used it at dusk, avoided the plants the bees favor and couldn't be happier. This thing is heavy when full with insecticide but very manageable if using a table to load it on your back. Start with the low flow setting on insecticide dispersal. I use the lowest setting and it works just fine even with the high population of mosquitos and large number of trees and bushes. I Highly recommend it. Seems well built. Easy to use, takes no real time to prepare and treat my 3/4 acre, I have a lot of trees and bushes, but it is just a walk around the yard.

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  • 9 of 11 people found this review helpful:

    1 of 5 stars  Beware
    By Tony in California on 04/24/2016

    So far I give it a one star rating because I have not been able to use it yet. I followed the instructions in the owners manual of doubling the oil content in the mix for the first five tanks. I start the engine and it starts running rough immediately after start up. I have pure water in the pesticide tank so I can test the machine. The engine does not climb to full rpm at any time. Choke was disengaged right after starting it up and it seems to operate as designed. I replaced the gas/oil mix in the tank with regular 50:1 ratio/ 2.6 fl oz per gallon and the rough-running continues. I pulled the spark plug and it is black like from running extra rich. I cleaned the SP, reinstall it and the rough-running continues. I don't want to start messing with adjusting the carb so I look up Solo dealer locations to take it in. My closest dealer is over an hour away! I ordered a new spark plug and I'm getting it soon - I will try that first and then I guess I will have to drive over an hour if that does not cure the problem. A GIGANTIC disappointment to say the least. I bought it because it is supposedly Made in Germany . . but . . the Bosch spark plug I took out is Chinese!

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Most Helpful Q&A's

05/29/2014 Fabio from Lake Barrington

QTalastar P vs Bifen IT
I just got a response from another question suggesting this Solo 451 product along with Bifen IT. In all recommendations I reviewed on this website it is recommended Talstar P as safer product. I understand Bifen is very toxic. Can you please explain the differences between both products? My property has a natural pond in the back (200 ft from the house) and it is a wooden area. Thanks

ATalstar P and Bifen IT are essentially the same product but made by different manufacturers. Bifen IT is the low cost, generic version of Talstar with the same efficiency. Talstar P and Bifen IT both share the benefit of being a low toxic option with minimal dermal toxicity. However, since you are close a pond we would recommend using EcoVia EC which is a safe, natural, residual insecticide that can be safely used around bodies of water without harming aquatic life.

26 of 27 people found this answer helpful.
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06/20/2013 Sue from Edgartown, Ma

QWe've just purchased a Solo 451 backpack mist blower from you. What is the best solution for mosquito control?

AOur best recommendation for mosquito control is the Talstar P. It is a great safe insecticide that can be used in a wide variety of areas to control mosquitoes as well as a plethera of other insects. The Talstar is used at the rate of 1 ounce per gallon of water so you would need 3 ounces for the 3 gallon tank of the Solo 451 unit. Concentrate your spray on areas where mosquitoes are more prone to harbor, like nearby bushes and dense foliage of trees that can hold moisture under the leaves.

12 of 14 people found this answer helpful.
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06/01/2013 Mike from Montgomery, Al

QHas the Solo 451 been tested or used to apply herbicides in forestry applications?
Specifically invasive species such as Kudzu, etc. using Triclopyr or Transline, etc.

AWe contacted Solo and they said that any herbicide or insecticide can be used in the Solo unit. So any product that includes Triclopyr or any other ingredient that would be diluted with water in the tank will work fine.

7 of 7 people found this answer helpful.
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05/07/2015 Travis from Minneapolis, Mn

QDo you sell the liquid booster pump for the Solo 451? It is Solo part number 44 00 235.
I would like to purchase the Solo 451 soon to treat 25 15" spruce trees. I spoke with Solo and they said I would need to purchase the optional liquid booster pump to achieve the height to reach the upper portion of the trees. I would like to purchase this liquid booster pump at the same time I purchase the mist blower. Thanks!

AYes, we do offer the Liquid Booster Pump for Solo 451 Part # 44 - 00 - 235 for $140.03 however, it is a special order item and needs to be purchased by phone with one of our sales representatives. Please give us a call at 866-581-7378.

5 of 5 people found this answer helpful.
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05/29/2014 Fabio from United States

QFogger vs mister
I have 2+ acres in wooden area in Illinois. Zone 5 (if needed). The amount of mosquitoes is unbelievable!! I am looking for a product and applicator that is effective to kill mosquitoes, ticks, mites. Of course I would like an economic option. I found several products like Fogger, Fogger Jr and Professional Mosquito Kit. Also what considerations I need to have because at the back of the property there is a pond and a creek. Should I spray only up to 10 ft before the pond?

AWe would recommend to go with the mister over the fogger. You could use the Solo 451 with Bifen IT.  By using a mist blower you can apply products that leave a longer residual like the Bifen.

5 of 7 people found this answer helpful.
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Most Recent Customer Questions

07/16/2018 Ks from Cyprus

QHow far does Solo 451 Mist Blower spray?


The misting range is 40' horizontal and 35' vertical for hard-to-reach spraying areas using the Solo 451 Mist Blower.

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06/30/2018 Wilie from Colt, Ar

QWhat is an insecticide for my vegetable garden that can be used in my Solo mister?


Bonide Eight Insect Control Vegetable, Fruit and Flower is an option depending on what you are treating for.  Essentria All Purpose is another.

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06/25/2018 Dawn from Orland Park, Ill

QWhat is the best sprayer/mister option for residential application for mosquitoes?
So many to choose from....??? about 5,000 square feet.


Our most popular applicator for mosquito treatments would be the Solo 451 Mist Blower. It is included in our Professional Mosquito Control Kit. The Chapin Premier 2 Gallon Hand Pump Sprayer would be a great handheld option.

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02/08/2018 Ann from Dahlonega, Ga

QCan Conserve/Spinosad or compost tea be used in the Solo 451?


You will want to follow label instructions for each product that you apply using the Solo 451 Mist Blower. The use of biologicals could cause clogging in some situations. Per the Conserve product label, "you will want to dilute the product with water and apply using suitable hand or power-operated application equipment (such as portable pump-up, backpack, hydraulic, boom)." We do not recommend using compost tea in the equipment.

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01/20/2018 Jon

QCan the Solo 451 Mist Blower be used to apply dormant oils?


The Solo 451 Mist Blower should not be used to apply dormant oils as they can clog the machine. We recommend using a sprayer versus a misting machine.

1 of 1 people found this answer helpful.
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07/15/2017 Tom from Ct

QCan the Solo 451 Mist Blower be used to treat ticks?


You can use the products in our Outdoor Tick Kit in the Solo 451 Mist Blower to control ticks outdoors.   Please take a few moments to review our treatment article on How to Get Rid of Ticks for more information on tick control products and equipment. 

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06/29/2017 John from Corpus Christi, Tx

QCan I use the Solo 451 mister to control fleas in my yard?


Yes the Solo 451 Mist Blower can be used to apply products for fleas in the yard.

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05/19/2017 Neil from Ca

QCan the Solo 451 Mist Blower be used with a product containing glyphosphate for weed control?


Water-based products can be dispersed with the Solo 451, however we usually do not recommend applications of glyphosate since it can drift when it blows during operation. There may be desired plants, flowers, shrubs, trees or grass that you do not wish to harm that could potentially be hit with the mist causing injury.

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05/09/2017 Robert from Cranston Ri

QHow much Permethrin 36.8% SFR do you use in the SOLO 451 Mist Blower?


The rate of Permethrin SFR used per gallon of water will depend on the pest you are treating for around the home. For general insects in the lawn like ticks, fleas, beetles, etc you would use 0.4 to 0.8 oz per gallon of water. Permethrin SFR is not labeled for use for mosquito control in landscape areas. You can reference the product label for specifications on usage rates for other pests and treatment areas. 

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04/02/2017 Dave from New Prague Mn

QWhat is the difference between the Solo 2T oil and other 2 cycle oils?
Why do we have to go from 50:1 to 25:1 and of course double the oil mixture? In a previously listed comment, someone stated that by doubling the oil ratio, it fouled the plug. Please advise.


The oil and gas mixture will depend on which oil is used in the Solo 451 Mist Blower.  If you are using the Solo 2T Oil, the mixing ratio is 1:50. If you are using any other two stroke oil, the mixing ratio is 1:25.

0 of 6 people found this answer helpful.
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