Dewormer

[critters]

I believe Ring worm has to be treated by a vet but other common worms can be treated over the counter.

Ringworm is a fungus, not a worm, but it can be treated at home too. I wouldn't use a piperazine wormer because the rounds come out paralyzed but alive. WIth Pyrantel dose is by weight, so probably the best thing to do is wait for the vet, but not too long.