Remove all food from your refrigerator and wipe down the inside with hot, soapy water to eliminate food spills.
Throw out all spoiled food and seal remaining food in airtight containers. Food stored in sealed containers is protected from contamination by roaches.
Pour 1 cup of boric acid into an uncovered bowl and place the bowl on top of the refrigerator. Roaches are attracted to boric acid and will take the natural poison back to their nest. When consumed, the boric acid poisons the roaches.
Place one roach trap on each side of the outside of the fridge, and place one underneath the front of the fridge, to capture the roaches and eliminate them from your home. Do not place the roach traps in the refrigerator, because this can contaminate the food.