DRAINBLAST Clog-Dissolving Pipe Cleaning Agent (8 oz)You've probably tried something like this before. Keep watching. "I'd been putting it off for weeks the kitchen sink was slow, smelly, and honestly just disgusting. I tried the usual stuff from the shop and it barely made a dent. I was already thinking I'd have to call someone in. I gave this a go thinking it'd be the same story but within about 20 minutes, you could hear it working away. Flushed it through and the difference was unreal. Water flying