Lpg cylinders with their valves still intact are categorized as hazardous waste and should be disposed in a waste collection center such as the HSL Sortti-stations. Since the Lpg-canister in question is considered as household waste, a store selling them isn't required to collect or dispose the canisters. For a household with no car, you can use public transports. The two Sortti-stations in Helsinki are in Kivikonlaita 5, 00940 HELSINKI and Betonitie 3, 00390 HELSINKI. The appropriate buses...6.8.2011 22:32