A one-off clog is annoying. A toilet that clogs every week usually has an underlying issue: partial blockage further down the line, a low-flow fixture mismatched to your household, a failing flange, or a venting problem.
Start with the basics: only human waste and toilet paper in the bowl. Wipes labeled “flushable” still cause a large share of residential clogs.
If plunging only helps temporarily, a plumber can snake past the bowl trap and determine whether the clog is local or in the main. Multiple fixtures backing up together is a red flag for a sewer-line issue.
Chronic clogs on an older toilet are sometimes cheaper to solve with a modern replacement than repeated service calls — especially if the trapway is narrow or glazed poorly.