My wife and I often carry "afterbite" its an ammonia pen thingy. It stings when put on a bite, BUT it attacks poisons and seems to majorly affect how bad a bite gets.

I rolled over on a blackwidow that bit me ( I saw the body), I felt it. Immediately we put after bite on it and used a venum sucking device and more afterbite and it never was more than a red spot that went away after a month. I WOULD DEFINITELY USE IT ON AN EXTRACTED TICK SITE, THE MORE IT HURTS THE BETTER.

A friend of mine fell on granite and scraped up a bunch of skin on his leg. I had a blue hrdogel thingy about 3"x3" that covered most of it. We went home the next day. The blue thingy was covering the worst part and it healed the quickest. I've used a couple of them on other people - I never get hurt.
Jim