• 1 part boric acid (found in pharmacy area of grocery store)
• 2 parts flour
• 1 part unsweetened cocoa

Mix together all ingredients and sprinkle in areas that you’ve seen roaches.

• Don’t put in areas that children and pets might eat it.
• I typically make little shallow aluminum trays by wrapping a piece of foil around the bottom of a jar or coffee cup to help form it. These are great to slide on top of cabinets.
• The powder doesn’t dry out like pastes, but might get hard if you have a lot of humidity.
• Check periodically to see if you need to replace.
• Keep excess in a well labeled container so no one eats it. The cocoa makes it smell good enough to eat.