Hi Shirley,
Recent research has found that polymixin which is an ingredient in Neosporin is not good for cats. We're therefore no longer using Neosporin.
Are you asking for applying something to Haley's ears?
This sticky has some options for that:
https://www.felinediabetes.com/FDMB/threads/testing-and-shooting-tips.85113/
"Ear Care
Since our kitties must endure so many tests, what are some ways to take care of the ears?
- Hold a wet, cool baby washcloth on the poke site immediately after the test to prevent bruising.
- Put Emla cream on the test sites after each test. It only takes a tiny dab and you can wipe it off before the next test. Emla cream requires a prescription from your vet. Neosporin with has been found to contain a toxin to cats, polymixin and should be avoided.
- You can purchase Ledum 30C homeopathic remedy at any health food store. Dissolve one tablet in a small bottle of pure water and then apply one or two drops to each ear every day. Ledum is great for puncture wounds."