Rebecca, I'm not sure what's up because I didn't participate in the original problems. I just went back and read through a number of posts, but it seemed like the problems had been solved, last posts I read.
I must have missed something!
I'm glad you're trying again! He sounds like a real character, and I hope you get to really enjoy Bentley.
We have three feral rescues living with us. We had problems with the scratching until I read this interesting information. I'm pretty sure it was in "The Body Language and Emotion of Cats." (By Myrna M. Milani, D.V.M.)
She explained that when cats sharpen their claws, they perform two different functions - one is to sharpen the claw, and on is to help remove the sheath that sheds. They need two different types of scratching posts for this - one that is hard (like wood - usually recommend Sisal posts for that), and one that is of a loose type fabric (like our chairs!!!). We sprayed the chairs with lemon smell and put on double-sided sticky tape until the cats got used to using the carpeted post we bought them IN ADDITION to the Sisal post. Now they use the posts. :tounge2:
But it did take time and patience!!!!
Also, I have severe allergies to cats and now have asthma (probably from smoking and growing up with second-hand smoke). I don't know about the medicine conflict you mentioned, but that can be discussed with your Doctor. I take Zyrtec-D, I have a prescription steroid cream for when I get hives on my arms, I have a prescription nasal steroid that I take twice a day (Flonase), and I have an albuterol inhaler, which I use three times a day as per the prescription, and don't seem to need it otherwise.
We give our cats baths once a month, and wipe them down every night with the bath wipes they sell for pets. It really does help keep the dander down.
Because he had worms before, please take a stool sample to the Vet ASAP. Because he had fleas, you should consider buying a flea collar to cut up and put in your vaccuum cleaner bag. DO NOT PUT IT ON YOUR CAT. They are very dangerous to a cats' health - many have allergic reactions that actually cause their death. !!! If Bentley has had a flea bath, he should be free of fleas - but if he had them before, the larvae might be in your home. You should discuss with the Vet using a dose of Advantage on both cats (it is sold through the Vet, not in a supermarket) to ensure that there's no return of the fleas (did your other cat get them from Bentley?) - but I don't know if he needs the treatment if he's recently had a flea bath (which is why you should discuss it with your vet).
As you already know, we're here for advice in the Behavior and Health forums, and for moral support here in the Lounge.
Hope it goes well this time for both of you!!!!!