http://www.instructables.com/id/Make-an-all-purpose-organic-pesticide-from-vegetab/

Make an all purpose organic pesticide from vegetables
This instructable will show how I made a cheap, all-purpose organic pesticide for my herb & vegetable garden. It can be used on a variety of insects that live in the dirt or on the plants including worms, mites and other parasites.

This entire pesticide will eventually break down and be reduced to nothing, so it is OK to eat any herbs or vegetables that are growing. This is mainly intended for indoor use, but I see no reason why it wouldn’t work outdoors as well.

Step 1: Materials

Materials
The materials used to make the pesticide should be easy to obtain.

You will need:

http://www.instructables.com/id/Make-an-all-purpose-organic-pesticide-from-vegetab/