Planting bacteria gardens
When the bacteria gardens have cooled place them out on the table but do not increase the glass covers unless you are ready to plant them. Toothpicks or small wood splints make superior garden tools for planting bacteria gardens. Place 30 or 40 toothpicks in a covered can and bake them in an oven for an hour. This will execute most of the bacteria. When you remove one from the can use tweezers and only touch single toothpick. Secure bacteria from as many sources as possible. The following will be suggested: (a) a piece of decaying or rotten fruit; (b) a decayed tooth; (c) dirty money; (d) dirt from under finger nails.