Merit is not labeled for this usage. It is usually recommended to do both a topical treatment as well as a systemic treatment for aphids. Our most popular choices for these are Talstar P (topical spray, water-based concentrate- use 1 oz per gallon of water) and Dominion 2L (systemic, applied as a root drench; use 0.2 oz per inch of trunk diameter for trees or per foot of shrub height for bushes). You may want to take a look at our article on Aphid Control for more information on treating this pest.
Merit 0.5 G Insecticide Granules is not labeled for leaf miner nor for us on ornamentals for anything other than white grubs. You would need a liquid for shrubs and trees such as the Dominion 2L Termiticide.
When applying this systemic product as a drench for leafminers you will mix 0.1 - 0.4 fl oz per inch of the trunk diameter. Apply uniformly around the base of the tree in no less than 10 gallons of water per 1000 square feet. Direct application to the root area. Most people use a 5 gallon bucket or a large watering can to apply Dominion as a soil drench. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of trunk diameter for trees but you may use 1 quart -1 gallon of water per inch of trunk diameter for trees. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested. Since sandy soils can accept more water, using the higher volume of water is preferred. After the soil drench has been applied you should water it in with at east 1/2 inch of water. Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved.
You could also incorporate a product like Talstar P for a foliar application of leafminers using 0.5 to 1 oz per gallon of water per 1,000 sq.ft.
Merit 0.5 G Insecticide Granules are to be applied as a broadcast application around landscape ornamentals (trees, plants, bushes, shrubs) at a rate of 1.4 to 1.8 lb per 1000 sq ft. This product is not applied as a soil drench insecticide would be applied to the root zone.
Please review page 4 of the product label for more information.
Merit 0.5 G Insecticide Granules is not labeled for rose chafers but it is labeled for a variety of other chafers. I have linked an article from the University of Minnesota, that states that the active ingredient (imidacloprid) is known to control the rose chafers though.
https://extension.umn.edu/yard-and-garden-insects/rose-chafers
Treating for grubs can often vary from region to region and can change with the weather you have each season. It is best to apply your grub control products like the Merit 0.5 G in mid-June to mid-July before the grubs hatch. The eggs hatch in the fall, and grubs feed on turf in the fall, overwinter underground, and then feed again in the spring. You will see damage during both of these seasons. For more specific timing for your area, we would recommend contacting your local county extension office. We also have a treatment guide with more helpful information on grub control.
Yes, you can apply Bifen IT first and give it ample time to dry (at least an hour or so) before doing a treatment of Merit 0.5 G Insecticide Granules.
Bifen is mixed at a rate of 1 oz per gallon of water and can be sprayed up 3 feet and out 3 feet from the foundation of you home and the Merit can be applied at a rate of 1.4 to 1.8 lbs. per 1000 sq ft followed by sufficient rainfall or irrigation to move the active ingredient through the thatch.
Merit Granular Insecticide is not a pre-emergent herbicide. This product is an insecticide but can be used before the hatching of the grubs. This product is also not labeled to be applied in gardens or around edibles such as fruit trees. Also, this product is labeled to control the pests listed on the product label as long as you follow the label instructions.
Merit Insecticide Granules can be applied at any time, but if you are looking to control white grubs then you want to apply it several weeks before the egg match of the target pest. Usually, this application needs to be made in late Spring, usually sometime between May and late June. We recommend contacting your local Cooperative Extension for the best recommendation on application timing for your target pest in your area. Under normal circumstances, Merit will provide residual white grub control for four months or longer in turf.
Merit Insecticide Granules can last up to 4 months.
Merit 0.5 G Insecticide Granules is not labeled for grasshoppers.
Merit 0.5 G Insecticide Granules and Criterion 0.5 G Insecticide are just made by different companies but they have the same active ingredient.
Treating for grubs with Merit 0.5 G Insecticide Granules can often vary from region to region and can change with the weather you have each season. It is best to apply your grub control products in mid-June to mid-July, before the grubs hatch. The eggs hatch in the fall, and grubs feed on turf in the fall, overwinter underground, and then feed again in the spring. You will see damage during both of these seasons. For more specific timing for your area, we would recommend contacting your local county extension office. We also have a treatment guide with more helpful information on grub control.
Merit 0.5 G Insecticide Granules is not labeled for White Flies.
We would recommend Arena 0.25 G Insecticide for systemic applications on trees to White Flies. Please review the product label for more information.
Merit 0.5 G Insecticide Granules can be used to eliminate soil insects like grubs but is not labeled to control termites. Please review our subterranean termite guide: https://www.domyown.com/subterranean-termite-treatment-guide-a-478.html
As long as you follow the application instructions, you will not harm the wild life directly or indirectly by treating with Merit Granules. The active ingredient Imidicloprid has shown to have a low level of toxicity birds. We recommend applying when they are not in the area.
Yes, you can apply Merit 0.5 G Insecticide Granules and fertilizer at the same time.
Merit 0.5 G Insecticide Granules will last in the soil anywhere from about 30 - 90 days depending on the rate used and how much rainfall you receive. If you have very sandy soil and get a lot of rainfall, then we recommend applying at a lower rate more often rather than applying the highest rate at one time.
