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Hi,
The washing machine drain pipe goes through a hole in the wall. But there is a gap in the hole. Is it ok to block this gap, with a cloth or something more professional? Because maybe cockroaches can come out of it.
Thank you
![IMG_20250211_164016.jpg IMG_20250211_164016.jpg](https://cdn2.imagearchive.com/plumbingforums/data/attachments/45/45889-4f7587f7d4dc736cbb62638015501290.jpg)