3-4 large peppers
2 large onions
1 whole garlic
3 pints water
Few drops detergent
Puree peppers, onions and garlic in blender or food processor. Cover with water; let sit overnight. Strain through fine sieve. Add enough water to make 1 gallon. Add a few drops of soap or dishwashing detergent. Spray this mixture on plants and shrubs to control aphids and spider mites. Use every 7 to 10 days.
http://www.msue.msu.edu/msue/imp/mod02/01500539.html