Used as an odorless antifreeze to treat dirt used for bedding traps. Dirt treated with propylene glycol will also take a light rain or snow/thaw without freezing. Directions: When mixed with damp dirt – mix 2-3 ounces glycol to 1 gallon of sifted dirt. When used to spray or squirt on the dirt at the set – mix 1 part glycol to 3 parts water and apply in several layers at the set. Will not rust your traps.