Source: Environmental Protection Authority The Environmental Protection Authorityâs Safer Homes programme has some tips and tricks to keep in mind before you fire up the grill. âIf youâve launched into barbeque season without doing a maintenance check on your gas bottle, better late than never,â says the Safer Homes programme manager, Lizzie Wilson. âUse the bubble test each time you go to connect the gas bottle. Apply soapy water to the connections and turn it on. If bubbles appear you may have a gas leak, and should get the cylinder checked.â Liquefied petroleum gas (LPG) is what most people use to fuel their barbeques. It is butane, propane or a mixture of these two fuels. You can also buy smaller canisters for tramping or camping.