How to Use Pyrethrin

eHow may earn compensation through affiliate links in this story. Learn more about our affiliate and product review process here.

Pyrethrin is a natural pesticide that is derived from chrysanthemums by using the oils found within the flower. Since it comes from a plant, it is considered safe to use as a way to repel insects without causing environmental harm. Pyrethrin is the main active ingredient in numerous insecticides, including sprays and foggers. You can use pyrethrin to repel a large number of pests, including flies, earworms, beetles, fleas and ticks.


Step 1

Choose the form of pyrethrin that you want to use. The location that you plan to use the pyrethrin should determine which type that you buy. For larger areas, the fogger will be ideal while localized pest control can be managed by using a sprayer.

Video of the Day

Step 2

Purchase the pyrethrin pesticide product that you wish to use to control the insects in your yard. Do It Yourself Pest Control sells foggers and sprayers with pyrethrin.


Step 3

Mix the pyrethrin pesticide with water. In most cases, pyrethrin insecticides will need to be diluted prior to use. A typical formula is 1 to 4 tsp. for every gallon of water. You will then place the mixture inside a spray gun or watering can for application.

Step 4

Apply the pyrethrin to the plants or vegetables that you wish to treat. Pyrethin is safe to use on apple trees, plums, oak, elm, petunia, aster, marigold, peas, squash, cabbage, cedar, cucumbers, potato and willow. Check the manufacturer recommendations on the pesticide product to determine any additional plants, flowers and trees that you can use pyrethrin on.


Step 5

Put the pyrethrin directly on the plants and trees that you wish to protect from insects. Don't place the pyrethrin on vegetable plants within three days of harvesting. You can repeat application every week as needed.


Remember to read all warnings found on the pyrethrin insecticide product before use. It may pose a risk to household pets if the animal is exposed to a large amount.

Video of the Day


references & resources