My husband was bitten by a Hobo spider. The area turned black and started to spread to his front. Bite was originally on his back. He got weaker after a few days. I did not want to take him to a hospital as my research on internet said they will start trying to do surgery to remove it and they brought out that only makes it worse. So we went to an accupuncturist. She did a couple of needle treatments and gave him cream and some smelly tea to take at night for 5 nights. She said they treat all poison-animal vegetable mineral - the same way. But it still wasn't all healed up. So I found a website on charcoal capsules activated charcoal that you can buy at your health food store. It said it pulls poisons out of the blood stream and has been used to treat poisonous bites also. I had him take that and it seemed to heal up faster and he felt better right away.