Quote Originally Posted by CarlD View Post
Boric Acid is different stuff than Borax. And it IS a bug-killer. It's also a very soothing eye-wash in the correct concentration.
If you read the article in the link above in Dawndenise's post you will see that seven different borate compounds, including boric acid, sodium tetraborate in both the pentahydrate form (Supreme, etc.) and the decahydrate form (20 mule team) are listed as being registered pesticides in the US.