But you shouldn't have an issue at the needle exchange with your age, they don't ask for an ID or at least they don't in Wisconsin, I know I started going there when I was like 15, I do believe they ask your age but I'm pretty sure I just lied and said I was 18 and trust me I didn't look 18 at all when I was 15. They aren't most likely gonna give you a hard time, mine as well get them for free if you have the option and even if your not returning any dirty needles they will most likely give you more than 10 if you ask for an extra pack or two, especially if you say you help out other friends of yours with clean needles and you want a few extra for them. The ones around here encourage to give out clean rigs to your friends if they cant or wont come to the needle exchange.