Just remembered summat funny. My little sister back in the 1950s got two 'male' white mice in a mouse cage, which she kept in the garden shed. Well, one male turned out to be female and little mouslets were born. Some escaped through the bars which were there to keep grown mice inside, and went next door.
The lady next door, who had no idea about my sister's pets, told Mum one day about her problem with mice in the house. She said " I wouldn't mind, but the weird thing is, they are WHITE".
Mum pretended to be surprised!
My own solution to mice in the house has always been - get a cat!!