The Doggie Dooley Pet Waste Disposal System works like a miniature septic tank, utilizing natural bacteria and enzyme cultures to reduce dog waste to a ground absorbing liquid. The Doggie Dooley requires some installation by digging a hole in the yard. Add waste from your yard on a regular basis adding water each time you add waste. Add 1 Waste Terminator tablet per dog each week. The Doggie Dooley is a neat, clean, convenient way to dispose of dog waste. The Model #3000 Doggie Dooley features a galvanized steel tank and has a foot operated lid opener. The Waste Terminator is a non-toxic, mixture designed especially for dog waste. The Doggie Dooley is harmless to pets, lawns, and shrubs - an excellent way to dispose of dog waste safely and control odors. Note, like a home Septic system or Outhouse, there will always be dog waste in the Doggie Dooley. The waste breaks down continually, from a solid to a ground absorbing liquid. Works in all soil conditions except hard clay and heavy sand. Note, the Doggie Dooley works best in climates above 40F. During the winter months, activity will slow. When the yard is covered with snow, do not add any waste to the Doggie Dooley, wait until Spring again. Model #3000 is our septic tank model and comes in one-size-fits-all, for use for up to 4 small dogs. For other style Doggie Dooleys, search Amazon for other models!