Know any vets?
Might get some cluefulness by asking "what do you guys do for ~ (probable) spider bites?" Veterinary training IS more *intensive and varied than for AMA-type folks (Much harder to get into vet school than the MD conveyor belt). Thay are also (and especially, lately) more apt to have looked intelligently at the alternatives -- and to actually have Seen what they Looked at. Y'know?
* this opinion via a friend who couldn't quite get in.. to a vet school, though she Really wanted to and studied her ass off; great academic records etc. - had to settle for becoming merely a dermatologist, specializing in skin diseases of the rich. Yawn.
(We don't talk much of late; she's beginning to Sound like an AMA-MD, and has become a Mondo-consumer of the perks; brain-rot has set in. I predict Golf ere long..)
Luck,
Ashton