>>5383657an old method I had was to slather untreated ash/charcoal on my skin. It's more of a camping technique than anything though, and the warmness of the ash helps soothe preexisting bites. For indoors, rubbing alcohol helps to treat the bites. For actively preventing them, you can try those bug bands that you wear around your wrist, or you can just spray your doorways and skin with mosquito repellent.
