Termites eat cellulose (wood, paper, etc.) for nutrition and energy, but they can’t digest it themselves. Protozoa live in the digestive tract of every termite and break down the cellulose so that the termites can absorb the nutrients. The active ingredient in Term-A-Rid 613® Wood Stakes kills the protozoa, effectively destroying their ability to obtain any nutrients from its food. The overall result is a reduction of termite activity around your home. The Termite & Killing System is designed to monitor termite activity and reduce termite populations.