Precor IGR Concentrate - Questions & Answers

No, once the Precor IGR is dry there is no worries about harm to a pet that lays on the surface.  Remember that Precor IGR is not an insecticide; it does not kill the insect.  It is a product that prevents adult insects from reproducing and is more of a pheremone type chemical that "messes" up the life cycle process of an insect.  It is very safe around children and pets and this is why it so popular to use these products in schools, day cares, and dog kennels.

Typically most liquid applications take about 30 mintues to dry.  Specific times will vary based on temperature in the home and other factors. 

You do not need to actually spray the mattress and boxspring with Precor for it to effect fleas that may be hidden there. If you spray around the area where the bed is located the fleas will still be effected because of the unique molecules of this product. You should also thoroughly vacuum the bed to remove as many fleas eggs and larva as possible.

Methorprene (Precor IGR) is a very safe product that is non toxic to humans.  I'm sure you have showered off by now.  There should be no issues or worries with the product, it just needs to be washed off.

Precor IGR is not photo-stable and cannot be used outdoors. We do carry Archer IGR and Martins IGR which are photo-stable and can be used outdoors.

Tengard SFR can be mixed with Precor IGR Concentrate and it is labeled for flea control. Per the label, it can be used as a direct spray as a spot treatment to infested areas such as crawlspaces, rugs, carpets, pet beds and other pet resting areas. Please read the product label for complete application instructions.

Flea elimination indoors can take 2-8 weeks depending on the level of infestation. Indoor flea control will require you to use a mix of insecticides and also mechanical control methods. We recommend using at least 2 products to control fleas; an insecticide such as Onslaught Insecticide and an insect growth regulator such as Precor IGR. You can usually find an insecticide and an insect growth regulator together in a aerosol flea product. After 14 days, you should reapply the aerosol or liquid products to the carpets, rugs and pet's resting areas to control any newly emerging immature fleas. Severely infested areas may require a 3rd or even a 4th treatment in 14 day intervals.

Precor Concentrate should be used within 24 hours of mixing the product.

You can safely mix Precor IGR with Permethrin and apply as a broadcast spray on carpets and under furniture. You can also use diatomaceous earth in areas listed on the product label in a home that has been sprayed with permethrin/Precor. Be sure to read and follow the product labels for best results. Also, vacuuming prior to the first treatment and every other day for 14 days following the flea treatment will help get rid of the fleas much faster than spraying alone.

If you mop the floors or steam clean the carpets where Precor has been applied you will be effectively removing any residual control you would have gotten from the application. We can tell you that fleas do not usually develop out in the open on hard floors so if Precor IGR was sprayed on hard flooring there should not be any issue with cleaning the area now.

Yes, removing the cats from the area treated with Precor IGR is a good practice. They can go into an area that has not been treated until the treated area dries completely. This generally takes 1-2 hours depending on how heavily you spray.

Precor IGR is not labeled for bedbugs and may not be effective for this type of treatment. You should also note that Precor does not kill adult or juvenile insects of any kind. We recommend that you encase your mattress and boxspring with Protecta Bed encasements and you thoroughly and consistently treat the entire room with products that are labeled for bedbugs such as those contained in our bedbug kits.

The formulations between structural/lawn insecticides vs. topical animal flea products are completely different. While the concentration in some flea products is quite high, the volume is quite low. There is no reason to use a higher concentration of IGR for insect control in the home. Manufacturers and universities have spent millions of dollars researching what concentration of methoprene works best in structures and yards to interrupt breeding cycles in certain insects. The concentration you see today is a direct result of that research. So the answer to your question is no, we cannot get a higher concentration than you have already found on our site. The only company that can get a higher concentration is the manufacturers that make the products.

Yes, you would dilute 1/4 ounce Precor per 32 ounce spray container.

Yes, Precor IGR Concentrate can be sprayed on pet sleeping and bedding areas. This is just a growth regulator so it will not kill any fleas. It will simply stop their lifecycle.

Another option is to use Ultracide. It is very effective flea control aerosol that provides immediate kill of adult fleas and prevents formation of new adults from eggs or larvae. Ultracide dries quickly and will eliminate flea problems for up to seven months. This can be used on pet bedding and pet resting areas, as well as various areas where there is a flea infestation. This treatment will be done every 14 days until you no longer see activity. Make sure that you are still vacuuming daily as well.

The Precor IGR is only labeled to control fleas.  We recommend using an IGR such as Nyguard or Gentrol to help break the roach infestation cycle. We also recommend using a roach bait gel such as Advion Roach Bait Gel to help get rid of those roaches that harbor in areas where you cannot spray (cabinets, drawers, counters, around sinks)

Pets can re enter a Precor treated room after it has dried. This will take approx. 1-2 hours. 

Yes, if Precor or any insecticide got on any blankets or sheets used for sleeping on you would need to wash them before using them again. 

Precor 2000 or Ultracide would be a good choice for indoor carpeted areas. Precor 2000 and Ultracide come ready to use, no mixing or equipment is needed and they contain both an insecticide for a quick knock down of biting adults and an insect growth regulator for control of developing flea eggs and larvae. Infested areas should be thoroughly vacuumed prior to product applications to help remove as much flea eggs, larvae and debris as possible and also to help stimulate larvae to change stages and come into contact with the product. You should continue to vacuum at least every other day for the next two weeks. Pets should be treated for fleas as well as the areas they spend a lot of time such as pet bed, kennels, carriers, couches, and moist shady areas where they spend time outside.

Yes, Precor IGR Concentrate is designed to be sprayed across carpets indoors and can be mixed with any indoor insecticide for fleas like the Conquer Insecticide for broadcast spraying and control. Please see our Flea Treatment Guide for more important information about treating for this pest.