I found this on the web....I have used it successfully!
Natures Insecticide:
Boric Acid is the "secret ingredient" in so many commercial treatments for insect control. Boric acid (100%) powder is odorless and nonstaining. Kills roaches,termites, fireants, palmetto bugs,ticks,bedbugs, fleas, boxelder bugs, carpet beetles, centipedes, crickets, earwigs, grasshoppers,millipedes, scorpions, slugs water bugs,and many many more creepy crawly insects.
Ants : This past year have been on a rampage here in Fl, the insect capitol of the world. This homemade treatment has worked very well on both carpenter ants and pharaoh ants.
Ingredients:
1 Tablespoon of Boric Acid, 1 tsp of Sugar, 4 oz water, Cotton Balls.
Mix Boric Acid and Sugar in a bowl. This can be poured over a cotton wad in a small dish or bottle cap. Keep this from drying out for continued effectiveness. Place Cotton balls in path of Ants.