Propane / CO2 Detectors

We have an outside kitchen and rarely have cooked inside, besides using the microwave for heating up items. I am kinda strange that I do not like to leave the gas on all the time, if we want hot water or need gas to cook, I turn the propane tanks on and then turn them off. I only would leave them on if we needed heat throughout the night, which June and July we did not.

I am going to call the manufactor of the alarm today and see what they recommend. Mind you I have heard the alarm go off when I drove by and cut the grass next to the unit with either the riding mower or push mower.