Brett from Canada writes
BTI Mosquito Dunks are not labeled for thrips or root aphids. It is only labeled to treat Mosquitoes and Psychodid Flies, and their larvae. If you’re using them for mosquito or psychodid flies, 1 briquet treats up to 100 sq ft of water. OHP Marathon 1% Granular is an insecticide that provides systematic activity in plants when it's applied to the soil or other media. Watering, timing, and rotation are key to successful application. This product can be used for ornamentals, fruit and nut trees, nurseries, interior plantscapes, and vegetables in greenhouses. It effectively controls aphids, thrips, whiteflies, soft scale, and mealybugs. Offers 12 weeks of control on ornamentals plants for resale grown in the nursery or greenhouse.
Answer last updated on: 02/13/2019
