Time for the guinea pigs to come in, and keep the cats out - but how?

[cathy66]

We put our two guinea pigs outside for the warm weather, but it will soon be time to bring them back in. This means putting them back in a cage in my daughter's room, which is fine (apart from noise sometimes at night).

The problem is my cat will pester the poor things when we are not around. We could shut the door to that room when we are out, but to stop it getting a little smelly in there from the cage, we prefer to keep the door open.

How then to keep the cat away and give the pigs some peace?

Or maybe it won't be the issue I think it might...?