I have had a Doggy Dooley for almost a year now. I have 2 Labrador Retrievers, one at 61 pounds the other at close to 100 pounds.
All of the literature I have seen on this product shows that I purchased the right model.
This is the first product I have purchased that I would re-think if I knew the performance results. I read all of the information included in the box. My drainage was well within acceptable limits of recommended flow.
I installed the unit as directed, prepared the water as prescribed, added the recommended amount (maybe a little more) of the digesting agent. What I now have is a plastic container burried in my yard that is full of waste. I used more water than required to try to " flush" the system, very little help.
This is not a product that I can recommend with a clear conscious.
On a scale of 1 to 10 with 10 being the highest (best), I rate the Doggy Dooley...
A Bob 1.0
Please remember, there is always the chance that I may have made a mistake in following the directions for installation and operation. However, I have not added waste to this unit this year and I still have no room for additions.