RN>My son wants to test common household items for bacteria for a science fair RN>project. Can anyone out there tell me, 1. Where I can buy petri dishes with RN>agar already in them? 2. Are there any precautions we should take while RN>doing this? RN>I would appreciate any suggestions/help. Thanks RN>rnbwoods at prodigy.net Use Jello instead of agar.