Pros: Amazingly effective to stop peeing and clawing furniture, also good to spray in carrier
Cons: Not cheap, but if you research, can find it 1/2 price
I wrote a lengthy review on the FELIWAY PLUG IN DIFFUSERS for the house, so I will refer you to that review to get a whole run-down on how this works for us.
Recently, I had a neutered male cat that, out of the blue, after three years of great behavior, suddenly started peeing ( more 'marking' actually ) nightly , under the dining room rug and on the kitchen rug. ( we took him to vet and ruled out any behavior problems first ....and the cat boxes were always pretty clean)
This area is right next to our sliding glass door-wall, overlooking the back yard, where ( during spring-- queening season ) the random neighborhood cats have started doing their thing late at night.
I already was using the Feliway plug ins, which work beautifully to stop fighting, etc. but I happen to see on the Feliway website, if I had this type of issue, to spray the Feliway SPRAY directly over every inch of the 'pee carpet' every 12 hours. And if it didn't work right away, to do it twice a day for 30 days.
Ok, well I did it one night, then 12 hours later, and low and behold, he didn't pee the next night ! Thinking it was a coincidence, I continued to spray this stuff over every inch of the two carpets every 12 hours, for the next several days....and he never peed again !
Now, one night, about ten days later ( and the stray cats were STILL out there in the back yard, at night peeing, mating, etc. ) I FORGOT to spray this stuff and darn it, didn't he pee AGAIN ! Immediately, I started my every 12 hour spray duty, then after many days, decided to live dangerously and actually began to do it only once a day but around 8 p.m. at NIGHT ( he would only pee at night and the ferals were only there from about 9 p.m. thru 1 a.m. not sure why ) We seem to be ok, now, just doing it once a day, but in the evening before 'pee time' would begin in the past.
I hope I don't have to keep this up forever, but my vet says that this kitten / queening season will end in a month or two, so we can only hope. But this stuff works like a charm.
And I spray it in their carriers when we have to go to the vet. Neither of my cats are a huge problem going in the carrier to the vet, but if it makes them feel better, I am happy to use it.
This stuff is expensive in the local pet retail stores, but if you go to Amazon, or to Drs. Foster and Smith Pet Catalogue website, they have them much cheaper, they honor the manufacturers coupons and have periodic sales, when I usually buy several and keep them on hand.
3/5/14 UPDATE: Queening season seems to be winding down.....For the past seven days, I have stopped spraying the Feliway on the 'pee carpets,' ( mind you, still have the plug-ins, though ) and NO PEEING ! I am still holding my breath, but it seems to have worked and the 'mating carnival' which was going on outside in the backyard has apparently moved on. So my neutered male kitty doesn't seem to have the need to 'mark his territory' by peeing under the dining room rug and on the kitchen area rug. ...we are cautiously optimistic.
6/9/14 UPDATE: He hasn't peed there ever again, and its been quite a while now, without spraying any Feliway on the carpet. And the outdoor cats are long gone now.