Thanks for your responses. Each time the alert goes off, it beeps once every 30 seconds, meaning that the alarm is defective, not that CO or propane are present. It appears that the lysol that was sprayed under the fridge a couple of years ago still lingers. Is there any way of getting rid of that "gas"? I've rinsed that area out numerous times and now when I hook up the alarm it takes about 5 days before it sounds the alarm, so it seems that it takes a while for the "gas" to build up. Initially the alarm would sound off within a few hours of hooking it up so things are improving but it is a little unnerving not knowing when it will surprise meant my dog.
