[TheThinkTank] youth and parents/guardians

Hello awesome Think-Tankers,

Quick question here from the BF Community Bike Project. A large percentage of the people we work with are at-risk youth in our community. A lot of these youth tend to be under the age of 18, and a good chunk of them are under the age of 14 (down to the age of 8). We're wondering about how strict we should be about allowing youth in here without parents/guardians? We don't want to turn youth away, and we require youth to get waivers signed by their parents... but we also don't want to be liable for anything that could go wrong with having a few young youth running around our premises, youth that aren't part of any specific program we offer. Any thoughts/words of wisdom? Thank you all so much,