Well, I usually bleach the area and spoon, lay down a clean paper towel, use clean equiptment, wash with antibacterial soap and clean with alcohol the skin area you need. I have never gotten any type of infection. Cleanliness, you'll get your buzz, but don't be so anxious you forget cleanliness. Also, peroxide is not a substitute for alcohol. Peroxide kills nothing. If you intend to reuse equiptment, rinse with bleach, take it apart, get the rubber clean. Blood grows bacteria, and a simple rinse will not thoroughly decontaminate your rig. There will still be blood traces. Depending, if you're doing meth, try to hydrate frequently with electolytes and eat at least once a day, and even if you don't want to, try to lay down at least 3-4 hours. You do that and you won't start looking like a meth head, which, btw, anyone can see and it's like advertising if you get pulled over.