Homemade Roach Killer Boric Acid

Homemade Roach Killer Boric Acid. Mix together the boric acid, onion, flour, and salt Metal or ceramic mixing bowl;

Spread the boric acid all over the kitchen cabinets, drawers, countertops and sink. Put the egg yolks in the bowl and add 2.5 ounces boric acid slowly by gradually mashing it together with the egg yolks. Metal or ceramic mixing bowl;

Sprinkle the powder along the tops of cupboards and cabinets in your kitchen and bathroom, as high places are a roach’s favorite hiding places.

Boric acid is much less toxic that most commercial cleaners and can be used for pest control, cleaning, removing mildew and weed control. Boric acid is much less toxic that most commercial cleaners and can be used for pest control, cleaning, removing mildew and weed control. It is then chemically combined with water to form an inorganic, white powder called boric acid. The queens rarely venture out, relying on the workers to bring them food.