K so you just boil a couple eggs...once boiled get rid of the white part and keep the yolk. Then i coat the yolk with honey and roll it in boric acid powder-which i put a bunch in a bowl or something. The honey will make it stick to the egg yolk. A friend told me she just mixes the egg yolk with water and boric acid but i find it to work better with honey and the roaches just fly to it, eat it and dieeeeee! lol The egg yolk dries and gets hard over time. Hope it works for you!
btw don't let your cat get to it