No problems here whatsoever..I'm merely curious. Do your indoor cats ever try to escape? Let me make it clear, knowing just how opportunist many cats can be, under no circumstances would I ever drop my guard and risk the possibility of either of my two getting out and I always take great care not to to allow the opportunity to arise for them to escape but in fairness they never attempt it though if they really wanted to, I'm sure they could in an instant but they don't! I say this because if we aren't allowing them into a particular room in our house for some reason, they will dart in at the first opportunity whether they're allowed in or not but never try to dart past us to get out of the house. We have a front door with an obscured glass side panel to the side and one of Ollie's favourite spots is to sit/lay right in front of the glazed side panel, so that he is literally inches away from the open door if we open it but never attempts to so much as put his nose over the threshold. Obviously we get between him and the door before opening and say "excuse me Ollie" which he knows is his cue to move away which he does immediately and never tries to get out. Again Jasper has never tried to escape either. We take them both to the caravan and although we're obviously very careful not to give either of them the opportunity, they never seem to want to escape and seem happy within their own boundaries. The same happens if we are at home and pop out shopping, Ollie is sat by the door looking through the glass panel and waiting for us but never tries to get out when we open it. Jasper sits at the bottom of the stairs and inspects the shopping bags as we pop them in the hall if we have several to bring in from the car but never ventures to the door as it opens. If someone knocks at the front door, both of them dash down the hall or stairs to the front door like a pair of terriers nearly knocking us over in the process to see who it is and both sit on the lower steps of the staircase looking what is going on. I think we are very lucky that our two are so good about it. We did think of fitting harnesses to them and giving them chaperoned walks in the garden but we wonder if we did that, would they always want to be out and even try to escape if we didn't have time to take them? I think if we went down the route of harnesses, there may be no going back and give them the wish for something they currently unaware of? I'm not sure about that one! So are your cats like Jasper and Ollie in that they make no attempt to escape or have your cats tried it before?