To control mites and other insects in a garden, Mix two tablespoons of hot pepper sauce or cayenne pepper with a few drops of Ivory soap into a quart of water. Let stand overnight, then stir and pour into a spray bottle and spray plant from above down, and from below up to get the underside of the leaves. Shake container frequently during application. Spray plants with soap spray in early morning or late afternoon or on an overcast day, because the solution may scorch leaves on hot, sunny days. Wet the foliage thoroughly, covering the tops and bottoms of the leaves, because the solution only works when it coats the pests. Because the spray kills on contact, it has little residual effect and must be reapplied every week until the pests are controlled.