I have 3 cats who are fond of scratching. One of them is also a chronic vomitter. By the way – they’re all female and spayed; 2 are mother and daughter. I’m in the market for new furniture and don’t want it to get destroyed by my feline housemates. I intend to buy more scratching posts, but am especially interested in an indoor invisible fence. The products I’ve seen are advertised for dogs – but are they safe for cats as well? Don’t even tell me about the sprays because those don’t work unless I use it on the cats directly (not the recommended use). I’ve also gotten into the habit of cutting their claws weekly, so I’m testing that strategy. Declawing is an absolute last resort.