It worked for a while, until I got a major clog.
I've been able to remove such clogs in the past with a simple plunger, however the last one was really stubborn.
I was frustrated and a bit drunk, and the plunging wasn't working.
OK, now I'm getting really pissed off. I tightened my grip on the plunger handle, rose up on my toes, and gave three hard plunges.
And then, on the that third hard plunge, the PVC coupling at the P-trap under the sink split open, resulting in a shower of spent grain and water that absolutely exploded under the sink.
I'll take my spent grains over to my buddies compost pile from now on.
Christ...what a friggin' mess.