Deek, you really ARE a Hoot! ( Hence the name?....
We RVers with these toilets pretty well know the do's and don'ts, but to an outsider, well, it can get a bit confusing. Better to just take away all the things they might injure themselves on, or plug your toilet!
BTW...we regularly buy plain old house brand TP from Walmart or Sam's and find it seems to break down just fine. Never been a fan of paying 5 bucks a roll for that official "camping" stuff.
On another note, after reading the "Deeker" tale of dissecting his toilet it does appear there are some differences between the Dometic and Thetford. His Thetford has an extra two mounting bolts to remove every time someone chucks some no-no into the bowl. Also, the screws holding the impeller housing together require more work and an additional beer just to get 'em out; Dometic's unit is held together with a simple worm clamp. ( I'm still wondering where that extra clamp came from after I put everything back together...
) I'm told the Thetford is a tad larger as well. But probably the most significant defining difference is the double flush buttons on the Thetford...something that seems so intuitive I wonder what those folks at Dometic might be smoking.