On the topic of disposing of toxic waste (as chlorine tablets would qualify)...You need to check with your town and possibly your county. I would presume that California, like New Jersey, has very strict laws on disposal of such substances (I have a can of gas that has been contaminated with water and I have to wait till October to dispose of it). We have only 2 collection days a year for it. You cannot just (legally) put it in the trash or wash it down the drain.