Quicker Flushing. Quicker Killing. MotherEarth 2% Py is formulated with the proven active ingredient pyrethrins, but without synergists. MotherEarth 2% Py is designed for Crack & Crevice, spot and space treatments. It is labeled for a wide range of pests including ants, bedbugs, bees, booklice, centipedes, clothes moths, cluster flies, cockroaches, fleas, fruit flies, house flies, silverfish, spiders, ticks, wasps and other crawling and flying insects. The botanical active ingredient, pyrethrins, is derived from chrysanthemum flowers. Pyrethrum has been used for thousands of years to kill and control a wide range of pests. In addition to its quick killing power, it also flushes insects from their hiding places to highlight problem areas. Beneficial Features: Uses the botanical insecticide, pyrethrin. Quick kill of both crawling and flying insects. No odor. 17.5 oz. can.