Nibor D Insecticide (5 LBS) Disodium Octaborate Tetrahydrate 98% Nibor-D can be used in almost any man made structure, even poultry houses. See label for details. To use as a liquid, apply 8 oz of product per gallon of water to mop with or use as a liquid spray. As a foam solution, 1 to 2 oz with water will work. Do not let foam dry. Apply 12 to 20 oz per 250 square feet when used as a dust.