Don't remove the nest, Stilly. When we had a waspectomy in our previous house, we were advised to leave the dead nest in place to deter (or displace?) possible repeat offenders.

Cat news: Ptolemy seems to slowly be recovering his nerve: last night, he wanted into the study where the dishes are, and finished off his tea; then he wanted out of the front door. Him having a snack before going out, erm, hunting used to be his MO of an evening, so we're hopeful for the short-to-medium term at least. Then he gets picky again this morning. *Sigh*.

Oh, and Herself does buy tuna in water, as that (unlike oil) can go down the sink.