Pros: It was only about $5/quart at OSH,,,used 2 quarts on tub drain !!
Cons: But i consider it a waste of money and time, not effective.
I have tried the 2 part "foaming" drain cleaner and it does seem to work slightly better. But after two big quart bottles of this Clorox Professional Strength Liquid Plumber Gel, i was very disappointed with how the bath tub drained. And yes i have taken out the big complicated mechanical drain plug long ago , as it seems mainly to just catch hair and not plug the drain very well,,,So i use rubber drain plugs.
I went to the website and the "guarantee" is only for one bottle,,,ooops, i bought 3,,,and for one household,,,for one year, so you are only guaranteed on one container/year/household, if you kept your receipt. Seems like a pretty flimsy "guarantee", and Clorox is very profitable as a corporation i seem to have read.