How to Mix 13% Permethrin to One Gallon of Water

Permethrin is one of the oldest broad spectrum insecticides on the market, and one of the most reliable for repelling flying insects. It is a synthetic form of natural insecticidal compounds, called pyrethrins, and is favored for use by many home owners because of its relatively low toxicity to humans, pets and the environment. Buying a "13 percent" concentrate saves a lot of money, but it must be diluted with water before use.

Rubber gloves
13 percent permethrin concentrate
Plastic bucket
Pump sprayer
Measuring cup

Instructions

- 1
  Put on rubber gloves and protective clothing, such as long sleeve shirts, long pants and close-toed shoes.
- 2
  Mix 5-1/2 ounces or 10-2/3 tablespoons of the permethrin concentrate with a gallon of water for the initial application in areas with heavy insect infestation. This makes a 0.5 percent solution, which is suitable for treatment of lawns, ornamental plants, and the foundation of homes and other structures.
- 3
  Mix 2-2/3 ounces or 5-1/3 tablespoons of the permethrin concentrate with a gallon of water for continued application for maintenance purposes, or for the initial application in areas with light insect infestation.
- 4
  Pour the solution into the pump sprayer. One gallon of the solution will treat about 1,500 linear feet if sprayed in a continuous narrow strip.
- 5
  Spray the solution wherever insects are seen or thought to be living. Permethrin also can be used as a general preventative spray to repel mosquitoes, gnats, ticks, chiggers and other nuisance insects. Permethrin remains effective for up to three weeks after application. Apply again after three weeks for maintenance purposes or whenever insect populations begin to increase noticeably.

Yellow Daisy Bush & Deer

How Long Should You Submerge Plants to Kill Spider Mites?

Pests, Weeds & Problems