Via another website. I couldn't help but laugh at how they have to bash the use of the BBB method in order to scare people into buying their product:
one of their arguments is what to do with a #6 plastic bottle with a water soluble chemical in it. what i usually do with mine is gather the bottles for the week in the laundry room and rinse them out when im doing a load of socks, then i recycle the bottle, and its much safer than opening one of those buckets of chlorine and getting a face full of toxic chlorine gas.
http://www.learnaboutpools.com/poolshocks.html said:Don’t use Liquid Shock!
Another type of shock that is widely available at any local pool store, hardware store and many grocery stores is liquid chlorine. This liquid chlorine is commonly used as shock, and used in place of chlorine tablets. Many pool owners believe this liquid chlorine is all they need to properly maintain a swimming pool, and unfortunately this is incorrect. Liquid chlorine is very inefficient and costly compared to properly maintaining a swimming pool using chlorine tablets and a weekly shock treatment. Liquid shock may seem easier to use than the granular shock for some pool owners because you simply walk up to the pool and dump the liquid in. The problem is that after you dump the hazardous liquid in your pool, you have to dispose of all the empty plastic bottles with the dangerous chemical residue inside. Granular pool shock is packaged in small, easy to use 1 lb. bags. If any children have access to the area where pool chemicals are stored it will be far easier to have an accident involving full or empty bottles of liquid chlorine, than an accident with bags of granular pool shock.
Granular Pool Shock is rated at a minimum of 47% available chlorine and available in concentrations up to 75%. If you look at the label on a bottle of liquid chlorine it will say that it is ONLY 10% SODIUM Hypochlorite (chlorine)!! This means you are paying for 90% salt water with every bottle you buy. The dosage for a standard granular pool shock is 1 lb. per 10,000 gallons of pool water. If you are currently using a liquid shock, you should compare the cost of a dose of liquid shock to the cost of a dose of granular pool shock. You will find that granular pool shock can offer you a considerable savings.
one of their arguments is what to do with a #6 plastic bottle with a water soluble chemical in it. what i usually do with mine is gather the bottles for the week in the laundry room and rinse them out when im doing a load of socks, then i recycle the bottle, and its much safer than opening one of those buckets of chlorine and getting a face full of toxic chlorine gas.