Here is a simple recipe that helps keep insects away from ones vegetables.  No chemicals needed.  Also look for more information on gardening and things in my new book coming out this spring.

Ingredients:

1 un-peeled onion
1 un-peeled head of garlic
1 tablespoon cayenne pepper
3 pints water

Directions:

1     Chop onion and garlic and combine all ingredients in a saucepan. Simmer 20 minutes.
2.    Cool and store in jars in the refrigerator for 6 weeks.
3.    Strain and store in jars.
Use:
To use, dilute 8 tablespoons of concentrate per gallon of water. Add 1 tablespoon of dish washing liquid. Red pepper spray is a good general insect spray and is an effective repellent against insects and animals.