Cockroaches can appear in showers even when bathrooms are cleaned often because they’re drawn to warm, moist drains. A simple hack involves using a party balloon as a barrier. Remove the drain cover, cut both ends off a balloon to make a stretchy tube, and slide it around the cover. When the cover is reinstalled, the balloon creates a tight seal that lets water flow but blocks bugs. For best results, keep the bathroom as dry as possible, wipe surfaces after showering, clean around the drain, and seal any small gaps or cracks. Together, these steps help reduce pests and keep your bathroom fresher.