Finding cockroaches in your bathroom can be unpleasant, especially when they seem to appear near the shower drain. These insects thrive in warm, damp environments and may enter homes through gaps around pipes, plumbing openings, or other small spaces. While a clean bathroom helps, moisture and hidden entry points can still attract unwanted pests.

One household trick involves using a party balloon to create a small barrier around the drain cover. The idea is to use the balloon’s stretchy material to reduce gaps around the cover where insects might squeeze through. However, this method has not been scientifically established as an effective way to keep cockroaches out, so it should not be treated as a guaranteed solution.

If you consider using any material around a drain cover, make sure it cannot loosen, enter the pipe, or interfere with drainage. Never place a balloon or other object inside the drain where it could cause a blockage. If water begins draining slowly or starts pooling, remove the material immediately and check that the drain is functioning properly.

There are more reliable ways to help prevent cockroaches from entering your bathroom. Keep the area as dry as possible, repair leaking taps and pipes, clean away soap residue and other debris, and seal gaps around plumbing with suitable materials. A properly fitted drain cover can also help, although it may not prevent every possible entry route.

If cockroaches continue appearing, check other areas of the home for signs of infestation, including under sinks, behind appliances, and around plumbing penetrations. Sticky monitoring traps and appropriately used cockroach baits may help identify and control the problem. For a persistent infestation, consider contacting a licensed pest-control professional. Combining moisture control, proper sealing, and effective pest management is more dependable than relying on a balloon trick alone.