I really don't want to get into a debate about keeping a cat in the house, she's DDs cat and she wants her to be a house cat, she gets regular supervised time in the garden and hasn't shown any interest in going any further.
Anyway, my question is has anyone found an effective system for being able to open windows far enough to allow a breeze but not enough to let a cat out? Child locks, mesh screens etc.
DP is obsessive about having windows open at night and it means he's not keen on staying over in warm weather, we'll be moving in together at some point so I need a solution.