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Merit Granules- Turf Insecticide

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Merit 0.5 Insecticide Granules are the best grub control product available. This product gives outstanding residual control of numerous ornamental pests - it interferes with nerve impulses and disrupts insect behavior. Pests stop feeding, stop reproducing and eventually die.

Target Pests

Merit Granules are used to kill grubs. It can also be used for systemic insect control in turfgrass and landscape ornamentals.

For Use In

Merit is for use in and around Turfgrasses Trees Shrubs Evergreens Flowers Foliage Plants Ground Covers.


Apply MERIT 0.5 G Insecticide uniformly over the area being treated with normally used granular application equipment. Both droptype and rotary-type spreaders may be used to apply MERIT 0.5 G Insecticide. Avoid the use of spreaders which would apply the material in narrow, concentrated bands. Calibrate application equipment prior to use according to the manufacturer’s directions.

Optimum control will be achieved when applications are made prior to egg hatch of the target pest, followed by sufficient irrigation or rainfall to move the active ingredient through the thatch. Adequate distribution of the active ingredient cannot be achieved when turfgrass areas are waterlogged or saturated with water. Applications cannot exceed a total of 80 lbs per acre per year.

Coverage Area

The coverage area per bag of Merit Granules varies depending on pest being treated. One back will do between 1/2 and 1 acre.

Time to Kill

The active ingredient in MERIT 0.5 G Insecticide has sufficient residual activity so that applications can be made preceding the egg laying activity of the target pests. High levels of control can be achieved when applications are made preceding or during the egg laying period.

Country of Manufacture

United States

Mix Rate

Applications of MERIT 0.5 G Insecticide cannot exceed a total of 80 lb (0.4 lb of active ingredient) per acre per year.

Active Ingredient

Imidacloprid 0.5%

Merit Granules- Turf Insecticide

Merit Granular (by Bayer) is the longest lasting broad-spectrum grub control product on the market. Both curative and preventative, Merit Granules holds a ten-year record of 90% effectiveness on virtually every species of turf and ornamental pests.


Merit even improves the quality of your turf. Merit 0.5 G is for broadcast application on and around turfgrass, ornamentals, trees, shrubs, flowers, groundcovers, and in and around commercial or residential buildings. Apply Merit 0.5 G uniformly over area being treated with normally used granular application equipment.


Both drop-type and rotary-type spreaders may be used. Avoid using a spreader which would apply the product in narrow bands. For optimum control, product application should be followed by mechanical incorporation, irrigation, or rainfall, to help move the active ingredient into the soil. Merit 0.5 G insecticide attacks the nervous system in insects and prevents normal transmission of nerve impulses. This mode of action results in disruption of normal behavior; treated insects stop feeding, do not reproduce and eventually die. Merit 0.5 G insecticide is most effective when applied prior to, or just after, egg lay. In most cases, adult emergence occurs in early summer, often after significant rainfall or irrigation, followed by mating and egg laying. This usually continues for four to six weeks. Under normal circumstances, Merit 0.5 G insecticide will provide residual white grub control for four months or longer in turf.







We suggest using Reclaim IT Insecticide in tandem with Granules for total outdoor insect control.


Make sure you stay protected when handling chemicals with the help of our homeowner safety kit.


Product Q & A

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Browse 9 questions Browse 9 questions and 9 answers
Will Merit be effective for chinch bugs? Is it too late to apply in North Central Texas?
Faye R on Sep 26, 2018
BEST ANSWER: Yes, Merit should work against chinch bugs and now is as great a time as ever to apply. The granules are spread over the lawn where they will be absorbed by the root system. When the chinch bugs feed on the grass, they die. As the long-lasting insecticide continues to eliminate bugs, the grass is able to grow and remain healthy.

See more options on Chinch Bug Control here: https://www.solutionsstores.com/chinch-bug-control
Could I use Merit systemic granules on the soil of my juniper bonsai plants? It has been recommended to me for that purpose.
Julie P on Jul 1, 2018
BEST ANSWER: Yes, the Merit is only an insecticide and will only kill the insects.
When is grub laying seasin?
Billie K on Jun 14, 2018
BEST ANSWER: Adult beetles emerge, mate, and lay eggs in midsummer, mainly from late June until early August. Eggs are laid a few inches below the surface and hatch in about two weeks.

Here is a great guide for grub life cycle.

I want to use Merit on my citrus trees to help prevent Asian psyllid infestation. It is safe to eat the fruit growing on the trees now if I apply product in September this year? Thank-you!
Karen P on Aug 22, 2017
BEST ANSWER: Merit granules are only labeled for use on turf and ornamental plants, not fruit trees.
Will this control leaf miner and mites on boxwood ?
Helen on Jan 22, 2017
BEST ANSWER: The Merit Granules are not labeled for use and control of leaf miners and mites, you may want to think about a product called Dominion to apply through the soil and apply directly to the leaves.


Here are some suggestions below.

any insecticides registered for residential use do not effectively control citrus leafminer, because they have difficulty reaching the larvae inside the mines. Leafminer infestations on mature trees rarely if ever require insecticide treatment. If very young or high-value trees are infested, insecticides can be applied to the new foliage when egglaying moths are active or to the soil in advance of new flush growth.

Insecticide products that contain the natural insecticides azadirachtin or spinosad show some efficacy against larvae and are safe for natural enemies. However, the residues do not last very long, and these insecticides might need to be reapplied every 7 to 14 days. Application of Green Light Spinosad is limited to 6 times per season.

Imidacloprid (Bayer Advanced Fruit, Citrus, and Vegetable Insect Control) applied to the ground at the base of citrus trees provides the longest period of control, 1 to 3 months. Imidacloprid should only be applied once a year. Imidacloprid applications should be timed to protect periods of leaf flushing, such as in the spring and fall. Imidacloprid takes 1 to 2 weeks to move from the roots to the leaves, so it should be applied as soon as new flush begins to appear. To protect bees, avoid applying imidacloprid during the period 1 month prior to or during bloom. Removing blossoms before they open on young trees will prevent honey bee exposure to imidacloprid in the nectar/pollen.

Frequent use of broad-spectrum insecticides such as malathion, carbaryl, and pyrethroids are not recommended as they will kill beneficial insects and can result in a buildup of whiteflies, scale insects, and other citrus pests.
Will this work on 1 gallon pots of Iris rhizomes against Iris borer?
Dayze on Dec 19, 2016
BEST ANSWER: Merit is not labeled for use on pots, to control Iris Borer.

White grub larvae
(such as Japanese beetle larvae, Chafers, Phyllophaga spp. Asiatic garden beetle, Oriental beetle)
is this safe around pets. I have 2 dogs that will be in my yard at some point after application.
Dan on Nov 27, 2016
BEST ANSWER: Yes the Merit Granules are safe for use with pets, you simply want the area to have time to completely dry after application before the pets are allowed back in the area.
Will merit 0.5g kill ants in Michigan? Not carpenter or fire just small ants
Mark on Sep 15, 2016
BEST ANSWER: No, I would recommend using Advance Granular Bait,

Looking to kill grubs,ants,fleas,ticks ... Basically all pest insects in 48150
Mark on Sep 15, 2016
BEST ANSWER: Merit is not labeled for flea, ants and ticks, so better to use Bifen Granules, and or Permethrin SFR.



Merit will work for insects that are attacking the grass or plant, so yes on the grubs.

Customer Reviews

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Professional Grade Product
Started to see signs of grub damage and Merit stopped them almost instantly. Will reapply next year. Great product.
September 15, 2017
1 year ago
I have been demoralized for 4 consecutive years in a good portion of my front lawn with grubs destroying the lawn. I wasn't going to seed this year giving up. Then Merit came along and so far no grub problem. I feel I can now get back to having a good lawn.
August 18, 2017
1 year ago
Just When I Thought Nothing Would Work for Grubs
AMAZING!! I though at first it might be an expensive loss however, the grubs were obviously gone as no new moles started tunnels and there was NO activity of moles at all. I recommend this highly. It was some of the best money spent in my yard and YES IT WORKS GREAT!!!!
August 19, 2015

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