In my old studio flat we had about 5 or 6 mice! Really not nice at all to be honest.
I got a old traditional trap from Homebase and some poision. I didn’t work for a good few days, but then after the mice had somehow eaten the peanut butter from the trap it started going off! 5 dead mice in 5 days!
Never did get that last one, don’t care now though as I don’t live there anymore 😆