We have a stray cat we have adopted. He came to our backdoor with a cut behind his ear. It has scabed over a couple of times and when it looks like it is going to heal, he scratched off the scab anad we are back to square one. Is there anything we can put on the scab to keep it from irritated him?
Thanks
Take it to the vet and have it looked at. They can tell you if it needs anything.
Celeste
Since he's reopened the wound several times, I am hoping it's not infected. Is he friendly enough to let you pick him up and examine the ear? Is it red, inflamed, pussing? If it's infected, he'll need to be seen by a vet for treatment.
If it's truly just a cut/scrape, you can put a tiny amount of neosporin on it and rub in. He can't lick his ear to ingest it.
We have a stray cat we have adopted. He came to our backdoor with a cut behind his ear. It ... cats can and do clean behind their ears so some how you have to prevent this for about a week.

A visit to the vet is really the best option especially if there is an infection.
A simple concoction you can make to help the healing process is a teaspoon of Vaseline jelly and mix in 4 teaspoons of sulfur Mix to a stiff paste and apply thinly over the wound. It is benign and won't hurt if the cat manages to lick it. A pre anti-biotic treatment for humans as well as animals! Still works.
You should be able to get a small quantity of sulfur from the local chemist shop - you don't need a big bag and it keeps forever.
My opinion is you need to take the cat to a VET. It may not be infected, as we humans refer to it but, it must contain some sort of bacteria so probably needs something stronger than you can give.
We have a stray cat we have adopted. He came to our backdoor with a cut behind his ear. It ... back to square one. Is there anything we can put on the scab to keep it from irritated him? Thanks

The problem is purely mechanical - the cat naturally will try to remove foreign bodies ie the scab. The fact that a scab has formed means the cat's own defense system is fixing the problem if it is dry and not weeping. So the solution to the problem is to prevent the cat from getting to the scab. You may need something like this

http://pethealth.today.com/files/2009/01/625779 puppy recovery 1.jpg

Your vet may have some other mechanical solution