Doggie Dooley's galvanized steel pail-shaped digester is designed to digest waste for up to 3 pets. Dooley installs into the ground with a 1" overhang so that only the cover is exposed. Heavy-duty plastic cover has foot-operated lid opener. Built-in overflow device releases treated liquid into the ground. This Doggie Dooley has a larger tube for faster drainage. Complete Dooley measures 15-1/2" deep x 13-1/2" diameter.