what is the poison or roach bait you use in the small needle type applicator?

not ure what it is but there are different baits that you can use. you can find them anywhere.

Welcome to the board, JimBarker. Billy uses eugenol oil to kill roaches. Eugenol is the natural oil that comes from trees and is the trees' natural defense against insects. Billy also used a roach bait, too. I think it was called abamectin. Try contacting Vexcon. Go to vexconinc.com and maybe they'll be able to help you.