Monday, May 25, 2009

DIY: Homemade Insecticide

Have occasional troubles with bugs but don't trust harsh chemical pesticides that are a hazard to friendly insects, or yourself? Try these recipes!

  • 1 gal. of warm water,
  • 1 cup of instant coffee crystals,
  • a squirt of dish soap(not detergent),
  • several dashes of tobasco sauce.
Spray both sides of leaves, the stems and soil surrounding plants. You can cut this recipe just as you would reduce any recipe. Refresh it the next year with a little tobasco sauce.

If you make kess than a gallon you could just throw it awy and start new in the Spring.

Do Not Use Instant Powder Coffee; it won't disolve well.

The soap is a surfacant which helps insecticide stick to the leaves. I think the key may be the tobasco sauce. Good Luck.


  • 2 tsp. baking powder
  • 1/3 cup rubbing alcohol
  • 1/4 tsp liquid dish soap
Add all to a 16 oz spray bottle, fill the rest with water and shake well before each use.
You will be amazed at how fast this knocks out unwanted pests.....before your eyes!
I would suggest you do this very early in the morning as to not burn your plants in the heat of the day.
You have to repeat this as you see the return of the unwanted pest, but it is safe, easy and works great ... I have not found any insect that it will not kill, with direct contact. I also see that it keeps them away for a period, depending on water and rain fall.This is safe and can be applied same day as harvest, just rinse well.


  • Garlic Concentrate (this can be bought at gardening supply stores)
  • Water
Boil a pot of water on the stove and mix in garlic.

Another option is to use certain kinds of plants strategically to drive unwanted bugs from your more delicate varieties. Called 'companion planting', this approach aims to leverage plants' natural properties for use in your garden. Popular companion plants are marigolds, 4 o'clocks, nasturtiums, garlic, borage and tansies.

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