"It takes Basch’s Rocky Mountain National Park facilities team about a week to process the few thousand bottles thrown away in the park over the prior year." “They’re basically little bombs,” says Brad Fimrite, president of Mountain States Environmental Services." "More recently, the brand Flame King has developed a one-pound bottle that can be refilled from a larger tank" Read about the waste and the danger caused by using 1lb disposable propane cylinders, and how our refillable option could help. https://www.outsideonline.com/2402144/propane-canister-recycling-national-parks