Kim, why don't you buy a bottle of the Feliway Spray and give it a try first before investing in several plug-ins. It will require you to stay on top of spraying it where it's needed and I know you are very busy but it would probably be worth seeing if it will help before spending so much on the plug-ins.

Feliway did great to help Ripley's stress when we just had 3 cats but once I added R&R it seemed like the Feliway started having an opposite effect. I've tried it again recently to help with adding the kittens and it really makes Rocky wired. When I use it he picks on Scout more and all the cats seem to be more aggressive and fight more. I can't figure it out.

Good luck and I'm sorry to hear Pouncer is sick again.