Fossilized algae powder prevents ants, fleas, etc. from climbing your bird feeder and bird house post. White talc-like powder is the fossilized remains of marine
phytoplankton. When sprinkled on a bug that has an exoskeleton (such as
bed bugs, ants or fleas) it compromises their waxy coating so that their
innards turn into teeny tiny bug jerky. Not harmful to mammals. Made In USA.