Boy, did it work... Not only that, but it made an extremely satisfying "whump" sound that sent me out to the hardware store to pick up more cartridges so I could attack all of our drains, plugged or not.
The problem is, the device also requires a single shot plastic disk that allows pressure to build up before it bursts. When it does, the resulting explosion is what actually blasts through the clog. These disks are no where to be found, except from the manufacturer... And they're both pricey and in short supply.
They look like Tyvek, but they're not. Tyvek doesn't burst under CO2 pressure. Certain types of paper may work, but when I thought about the work of having to cut all those disks out, I came up with a better solution that seems to work pretty well:
Step 1: How Kleer Drain Works
The same goes for the plastic disks, but they aren't so readily available. The only place I was able to find them was on the manufacturer's website. And they cost a gazillion dollars for a half dozen... And they only came with additional cartridges (which cost another half gazillion).
I think the company may be using the inkjet printer profit model... sell the printer at cost and make money on the ink. I have no problem with that, but I don't want my fun eating up my savings, or discover I don't have the parts I need in an emergency.
Enough commiserating, lets hack a solution!