I just looked quickly at these Dog poop Septic Tanks, I think that installation is key to get it to work correctly... How well they work who knows.... Personally I walk the dogs three times a day into the woods, while at the lake....
Personally, if I where going to try this, I would go the root of the 5 gallon buck DYI.... and see how it works.... if it works well, then maybe spend the bucks on the real deal....
I did see another device on Chewy.com, that will allow you to put the poop into your septic tank, and then flush with a little water... that may also work ....
https://www.chewy.com/doggie-doo-dra...oval/dp/191459
Overall Dog Poop is a stinky subject, but you have to deal with it...