yeah, four cats here, no smell.
and as to what sprink mentioned - the feliway - i will say that we have a couple of the "diffusers" (feliway comes in several different forms) and they are incredible in their ability to chill the cats out. they do minimize - probably eliminate, but i won't make that claim to be safe - scratching. in fact, every time i notice the beginning of naughty cat behavior i check the feliway bottle and sure enough, it's out of liquid.
they're expensive, though, that's the problem. so i would definitely try the spray around a pair of speakers, the diffusers are magic.
and as to what sprink mentioned - the feliway - i will say that we have a couple of the "diffusers" (feliway comes in several different forms) and they are incredible in their ability to chill the cats out. they do minimize - probably eliminate, but i won't make that claim to be safe - scratching. in fact, every time i notice the beginning of naughty cat behavior i check the feliway bottle and sure enough, it's out of liquid.
they're expensive, though, that's the problem. so i would definitely try the spray around a pair of speakers, the diffusers are magic.