DO NOT use fresh water, since this will activate the nematocysts. DO NOT scrub as this will only activate the nematocysts and cause further venom delivery. If no vinegar is handy, then human urine will do in a pinch. If you have a choice in the matter, use a man s urine rather than a woman s urine. This is because females are more prone to occult urinary tract infections, thus introducing bacteria.
Male urine is considered sterile, since men are much less likely to have a urinary tract infection.
Dust the area with backing powder, or flour, then carefully scrape off with the dull back edge of a butter knife b. Secondary bacterial infection may set in, especially if vesicles from. If this happens you will need to see a doctor for antibiotics.