DIY - Homemade Insecticidal Soap
We recommend doing this on a test plant first and waiting 24 hours to check for any negative effects.
Items Needed:
small bucket
bottle sprayer
mason jar
1 quart of hot water
bar of real soap (Examples: Ivory, Dr. Bronner's, Pure Castile Soap)
cheese grater
First, make the concentrate by using a cheese grater to grate one quarter of the bar soap into the small bucket. Add 1 quart of very hot water and stir until the soap is dissolved. Put this mixture in a mason jar to cool. When it is cooled, the concentrate will turn into a gel.Put 1 tablespoon of the concentrate per quart water into a bottle sprayer.
It is best to spray directly onto the insects you want to eliminate. The plant should be rinsed off 2-3 hours after application to prevent burning of leaves.