I have used the absolute best remedy for spider bites that I have seen in 62 years. My granddaughter was bitten on the back of her thigh and was scratching yet didn't know what it was. The bite was swollen and had a red infection about 3 in. Around the bite. I put oil of oregano around it and put a large bandaid on it. The next morning I checked it and all of the infection was gone with just the small red bite mark left. She showered and we put another large bandaid with oil of oregano on the pad on. The next day it only had a small darkened area aroung the bite. This bite cleared up without any scar at all.
I was able to use oil of oregano again when I was bitten. My husband said the bite was infected with red area around the bite about 4 in. wide. Again we used the oil of oregano and a large bandaid. It took 4 days to clear but I had no itching, infection, or scaring to deal with.