My kitchen fitters left a couple of large holes drilled in cupboards, probably for pipework that went elsewhere in the end. 20mm and 60mm. I want to fill or block them so insects can't invade the cupboards.
I foresaw some sort of plastic plugs that could fill the holes in, but I searched on Ebay, and apparently I don't know what to search for. Can someone give me a clue?
Alternative (cheap, easy, effective) ways of filling the holes are welcomed. I thought about taping some net over them as well but it's a bit Mickey Mouse.