Most clogs that form in the “trap” (the second, U-shaped, horizontal section) are caused by foreign objects that clog the drain pipe. In this case, eventually, the object will have to be physically removed. Here’s how to clean a trap yourself, to clear the clog and remove that toy car (or clump of hair or whatever!) without calling in a professional!

First, before you start unscrewing the pipe, be sure that there is not residual drain product left in the pipe. If you used a drain product, flush with at least three gallons of water, but still be very careful handling the pipe, since there could be residual pipe cleaner. (If you experience a total blockage with drain product in the pipe, you should call a plumber.)

Next, put on rubber gloves. Then place a bucket underneath the pipe to collect water. Now you’re ready to unscrew the slip nuts on each side of the trap (or simply remove the clean-out plug if you have one). Let water drain into the bucket as shown.