TriStar 8.5 SL Insecticide

TriStar 8.5 SL Insecticide

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Product Overview

TriStar 8.5 SL is the longest lasting residual foliar spray available controlling insects for 4 to 6 weeks. TriStar 8.5 SL has mulitple ways to work on contact, systemically, and through translaminar activity to control a wide variety of insects including aphids, leaf-eating beetles (Japanese beetle), caterpillars, leaf miners, scales (soft and hard), mealy bugs, whiteflies, and thrips.

The EPA has classified TriStar 8.5 SL as a reduced risk insecticide providing for greater worker safety with a 12 hour re-entry interval for greenhouses and nurseries; and re-entry into commercial or residential areas when the application has dried. TriStar 8.5 SL also works well with miticides and fungicides.

Supplemental labeling for use on greenhouse grown tomatoes.

Features and Specs

Active Ingredient Acetamiprid 8.5%
Target pests Adelgids, Aphid, Beetles, Caterpillars, Crane Fly Larvae, Fungus Gnat Larvae, Leaf-hoppers, Mealy Bugs, Plant Bugs, Psyllids, Sawfly, Scale (hard and soft), Swede Midge, Tentiform Leaf Miner, Thrips, Weevils, White-flies and others
* See label for complete list
For use in Commercial & Residential Indoors & Outdoors: Ornamental & Flowering Plants Grown Outdoors & Greenhouses, Shadehouses & Lathhouses
Bedding Plants, Flowers, Potted Flowering Plants, Ornamental Trees, Vegetable Transplants, Non-bearing Fruit & Nut Trees
* Do NOT Apply to Bearing Fruit & Nut Trees
* See label for complete list
Application * See label for complete application instructions
Pet safe Yes, when used as directed on label
Formulation Professional Product
Group 4A Insecticide
Shipping Weight 0.39 lbs
Manufacturer Cleary Chemical
UPC 706927855616
EPA Registration 8033-106-1001



FOR USE ON ORNAMENTAL PLANTS, FLOWERING PLANTS, AND VEGETABLE TRANSPLANTS GROWN OUTDOORS AND IN GREENHOUSES, SHADEHOUSES AND LATHHOUSES: bedding plants, flowers grown for cuttings,foliage plants, potted flowering plants, ornamental trees, listed vegetable transplants and non-bearing fruit and nut trees (Non-bearing crops are perennial crops that will not produce a harvestable raw agricultural commodity during the season of application).

Do not apply to bearing fruit and nut trees.

For control of insect pests, apply either as foliar broadcast spray to obtain thorough and uniform spray coverage of the plants or via a basal bark or injection treatment. For foliar broadcast sprays, choose a finished spray volume appropriate for the size of the plants and amount of foliage which will provide thorough coverage throughout the canopy. For optimum control, allow at least 6 hours before overhead irrigation of foliage. Do not allow public use of treated area during application.

The longest lasting foliar spray residual on the market today.

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Questions & Answers

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What is the application rate for mealy bugs on orchids when using TriStar?

I have a stubborn mealy bug infestation on my small collection of orchids. How much should I use if I use a gallon sprayer? Can that amount be measured accurately with the measuring spout? Should I repeat the application, and if so, after what period of time?

When treating for mealy bugs with the TriStar you will use 7.5 ml (0.25oz, 1.5 tsp) per 3 gallons of water for effective control. The Tristar bottle will measure as low as 5 ml in the built in measuring reservoir. It is suggested that you mix a surfactant with the TriStar when treating for mealybugs for better control. You can use the Non-Ionic surfactant we carry at the rate of 1-2 teaspoons per gallon of water. Do not make more than 4 applications per year. Do not reapply more than once every 7 days. To determine if application is necessary, monitor pest densities.

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11 of 12 people found this answer helpful

In preventing thrips in a greenhouse, would TriStar 8.5 SL be best used as a spray or drench?

TriStar 8.5 SL has mulitple modes of action, on contact, systemically, and through translaminar activity to control a wide variety of insects including thrips. The best treatment method would be to use a foliar spray. The label states that there should not be a soil drench application with the product.

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6 of 6 people found this answer helpful

How much Tristar 8.5 SL should I use to treat Japanese beetles in my lawn?

I would like to know how many teaspoons or tablespoons per gallon of water I should use.


You will use 0.125-0.253 fl. oz. of TriStar 8.5 SL per gallon of water for beetles, or 0.75-1.5 teaspoons.

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3 of 4 people found this answer helpful

Are there any heat restrictions on TriStar 8.5 SL?

TriStar 8.5 SL  like with most insecticides should be applied in the cooler times of the day. As far as shelf life, be sure to store in a cool dry area where temps do not freeze or go above 95 degrees. 

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How much TriStar 8.5 SL would you use in a 2 gallon sprayer for Aphid control on Crepe Myrtle?
TriStar 8.5 SL is labeled to be mixed at 4 fluid ounces per 100 gallons of water. There is a conversion chart on page 7 for smaller tank sizes.

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