What is the best way to tell in case you have a gas leakage in your own home? Your nose. Your gas company puts in a rotten egg odor in your gas in order to warn you whenever it leaks. You may also tell should you have one if you hear a hissing noise, see dirt appearing out of the ground (due to a damaged gas line), or see a broken connection from an appliance, which used natural gas, like a BBQ grill. Sometimes, however, the leak is not detectable. It might be released in too small of quantities or the homeowner's sense of smell is probably not that great.
These problems are solved with the purchase of a gas leak detector. Generally, the more costly a gas leakage detector is, the higher sensitivity setting it has. Basically, you are less inclined to get false alarms with a more expensive and an improved quality gas leakage detector. You can purchase one from stores like the Home Depot or Lowes or, needless to say, online.
All a gas leak detector can do is give you a warning that there surely is a leak in your house. Once you know the overall section of the leak (a faulty connection on the BBQ grill for example), put a soap and water mixture onto the region. Wherever there are bubbles, there is gas. If Gas Leak Detector are from the metal connection, all you might need to do is do a little tightening. If it's coming from the center of a tube, for instance, you're going to have to replace the tube.