I've never been sure whether this guy was kidding me when he explained how the City Pest Controllers get rid of their Sewer Rats, but here goes:

They paint boards with that glue stuff (mentioned previously) and lay them on the rat runs in the sewers. The Pest Controllers always wear Heavy Duty Wellington Boots & have strings tied round the legs of their boilersuits.

If you're a touch queasy, stop reading now:


Well, they go & check the boards for the next few days & anything that's stuck to the boards, they stamp on them. No chance of suffocation for these rats!

Sounded quite possible at the time & very cost-effective for the struggling London Borough Councils!