My toliet keep clogging. What are the possible cause for this? ...
Answers: Most clogs result from an excess of tissue--a problem that's easily resolved. Partial clogs usually require a closet auger. If the problem is surrounded by the drain line and out of get, you may need a longer snake or a professional drain-line service.
If your plumbing fixtures drain slowly, the problem may be a clogged vent. (soil stack) This happen when vents are unbecomingly located and when birds or animals deposit debris surrounded by the vent where it exits the roof.
Perhaps your sh1t is too big. Just a thought.