Hello:

For a house that has natural gas for heating, as well as the cook stove:

Was wondering if there are natural gas detectors (guess it's Methane) one
can perhaps place
in the basement near the furnace, such as there are for CO detectors ?

Probably as worried about a natural gas leak as I am concerned about the
possibility of excess CO.

Looked on the web, but could only find a model made by:
Safe-T-Alert (40-411) who I have never heard of.
Any good ?

Does Kidde or First Alert make these also ?

Any thoughts and opinions on these types of detectors, assuming they exist,
would be most appreciated.

Thanks,
B.