Huge wrote:

To the OP: I use Neosorexa, which I buy in bulk from Farmrite. It's a mixture
of grains and reconstituted something, all coated blue. It appears to work. I
also use the plastic breakneck traps, baited with peanut butter (I'm told
that Nutella works better, but neither of us like it, so we don't normally
have any).

I've got a number of outbuildings where mice can be a real problem -
they ate the wiring in an old Land Rover a few years back. I also use
Neosorexa but it's becoming less effective and we've had notification
that "supermice" resistant to poison bate are proliferating in
Hampshire. What has worked well for us are electronic traps baited with
peanut butter, chocolate or nutella. The only headache is the frantic
rate at which we have to empty the traps at this time of year. The cat
is bloody useless, she just stares at the mice and frowns from time to
time.