I always try to keep my kitchen clean and I'm very careful with all the devices there, but I also don’t know a woman who would never face clogged sink. That’s not a disaster of course and most can overcome it by themselves, but my case wasn't like this. I tried hard & used all those liquids to dissolve the clog, but nothing helped. Actually it turned to be a piece of a plastic cup who-knows-from-where, so I couldn't have helped with that in the pipe anyway. The resume is very simple – I called AquaLux, they came in 40 min and after 10 minutes my sink was ready for washing the plates again! Nothing to add, just fast, effective and low-cost. Thanks much.