You would know that Froufrou and Mittens are inside kitties. Frou is an inside kitty because she is an efficient, ruthless and indiscriminate hunter. Mittens is inside because she has no street smarts.
With Frou in the house, the small rodents never make their way in to the house proper, but they do get into the ceiling sometimes.
Anyway I decided that we would have to do something about all the rodents in the garden, so I started letting Frou out for a few hours a day. She had an immediate and devastating impact on their numbers. For the first few, she asked to come inside and ate her prey in the laundry.
Now there are no rodents left, she is going to be re-confined to the house. Well done Froufrou, but I'm not going to let you go on to hunting the birds and lizards.