Mice,any ideas on keeping them at Bay?

A good cat.

pest controller

If you could develop something that would 100% repel mice indoors and in outbuildings you would be onto a real money spinner and would solve a problem that’s been around for hundreds (if not thousands) of years.

I bought a plugin gadget from Amazon which screeches so that mice and rats hear it but not humans, cats, or dogs. It did the trick for me. My cat used to sit and look at them! After a couple of days I never saw another mouse.

After a neighbour demolished a wall last weekend, I saw a rat going along the back of our house. DH sorted out a humane rat trap, left it out last night, to find it shut up this morning. On inspection, found a hedgehog inside, very fed-up, which we quickly released into the garden. No sign of the rat today, he was quite brazen yesterday. We have experienced vermin in all our gardens, having lived in the country, but I never get over my fear and repulsion!

peanut butter on meal board metal bit on trap
trap facing right against the skirting board at a right angle
long metal bit ready to ping against the skirting board
dustpan and brush
bin

I second the plug in devices they worked for us.