We don't have anybody throwing stuff into the toilet, which shouldn't be there. The toilet is off the master bedroom. The only other toilet is on the other side of a wall. We can see where the drain pipes hit the main drain pipes in the garage. Essentially it's a straight short drop from the top level of a split level into the garage. Nothing else has had any problems, so presumably the problem is in the short length of drain pipe or the toilet itself.
Somebody suggested Roto-Rooter; but this isn't a clog in the main line, and they would seem like overkill ... but I've never used them, so I can't be sure.
Any suggestions as to what could be causing the problem & a solution?
Thanks for your help!
======================================================Dave Morgenlender e-mail: firstname.lastname@example.org ======================================================