Handling “hard dried stuff” in the black tank ?

LandYacht35diesel wrote:
Poop pyramid ! ... lol .... my situation is this ... I have the MH in my shop and am not going to use it any time soon. At least 30 days .... so the MELTING IT AWAY is my preference! MY CONCERN IS ..., that the pyramid BREAKS UP then interferes with the closing of the gate valve. That gate valve situation happened when I got the motor home from the RV dealer in Tucson.... a tampon got stuck in the valve path ! They fixed it

So if you have lots of time, just add water. There are plenty of bacteria and enzymes already present. There is no need to add magic elixirs.

Assuming the tank is directly below the toilet, break it up with a metal rod (I was shown once the handle for pulling the awning out works great...just don't go crazy and punch thru the bottom of the tank).

Ideally, with the water still in the tank, take it for a 20-30min drive and don't be shy about making it a jerky ride....then dump.

If it makes it into the 3" pipe, it should pass thru the valve.