Never mind freedom to sneak back in. With more bombs, possibly nuclear in nature.
We d othe same in the USA. Contain the vermin, turn them loose in the neighbors back yard after we feed and clothe them.
I once had a neighbor live trapping raccoons then releasing them someplace else. I offered to do it for him. I put a little red paint on their backs, turn them loose 10 miles away and pretty soon he was catching coons with red paint on them. I didn’t tell him what I did. Animals, either 2 legged or 4 legged, know where the gettin is good.