In California it’s the law that single family homes are required to own a c02 detector to test for carbon monoxide, the invisible gas that can kill ever so easily. SB 103 mandates that by July 1st, you should have one installed in your home and if you do not have it installed you can be liable for a $200 fine at least.
My land lady did call me to remind me to buy one in advance of the deadline, but I am waiting for my package from Amazon.
Make sure to buy your carbon monoxide detector today.
H/T: Orange Juice Blog