Help needed-mite preventative

[u/cantpickausername30]

Hi all, I really need help finding out if there's maybe a kitten-sized Revolution topical I can put on two rats. No one in Tulsa (even the shelters and rescues or pet stores) can advise on anything except their bedding or a bath using kitten Adam's flea/tick/mite shampoo, or permrethrin 10% for spraying your house perimeter.

I know there MUST be one because if I could do it for my ferret then there must be one for rats. My ferret was over 2lbs, though, and the vet had me us kitten Frontline or PetArmor. The rats are only 1lbs or less. ​