Ear cleaning/chicken pox

My ferrets have never had their ears cleaned, the only supplement I've found is the marshall's and that's so expensive, so is there any way I can make some? Also, since ferrets can get the your regular cold or flu they can get chicken pox too right?
Thanks ,Ian

I just use q-tips dipped in some warm water to clean ears.

Ferrets can catch the flu from humans, but they cannot catch the common cold (species specific) That said, it's still a good idea to practice good hygeine (wash hands) and keep contact to a minimum, as some flu symptoms may look like a general cold at first.

They cannot get chicken pox

Ferrets: Wesley, Percy, Owen    -rip Bandit-
Bettas- Kitty, Pip, and Logan
Sun Conure- Kita
Gerbils- Piper and Tailer

I use mineral oil to clean my ferret's ears.
 
I hope this helps

Yes, both those posts help a ton! Thanks!