If you can get away with it hang the planes from the ceiling in the bedroom or what ever. That way the cats aren't as likely to get on them. When storing them in the house to keep peace and not drip fuel : Tear a small corner off a paper towel ( I use the blue shop towels ) and twist it into a plug that can be pushed into the muffler to soak up drips from it. ( make it big enough that it stands out so you won't forget to take it out before starting ) Then take a small length of tube (metal or plastic ) and put it in the fuel line and the muffler pressure line to make a closed circuit of the fuel tank when transporting or storing. Another hint: when taking your plane into the house or what ever, always take it in TAIL FIRST, if you don't I promise you that one day you will cuss a blue streak because you just ripped the tail off going through a door.
Another hint : the tube you use to go in the fuel line can be secured while flying ( so you don't loose it ) by cutting a small length of fuel tubing and screwing it to your flight box, then insert the tube in it while flying.
Small hooks ( from home depot ) in the ceiling and small twine around the plane does a good job and it doesn't make too big a mess. Hope this is of some use to ya. ENJOY !!!! RED