I've been using this for several years. Works well. Hint: Hard to get into the drain so I cut the top off a 1/2 gal milk bottle to use as a funnel. Then just pour the hot water into the milk bottle. Also I use near boiling water. Works well.

I'm glad I trusted the high customer ratings.  This stuff worked quickly and thoroughly.  You must be careful though, as it's caustic.

My bathroom sink drains pretty well, but when clogs build up, the drainage slows without advance notice.  I've used Liquid Plumr many times over the years, but it almost always needs two applications.  This stuff is pricey, but I decided to give it a try.  Glad I did.

The clog this time was pretty bad, and the first application worked quite well, but I decided to do another application.  My sink now drains faster than it ever has in the ten years I've lived here.

Heed the directions, but please consider the extra precaution steps I devised, listed at the bottom of this review.  The label says this stuff is caustic to skin and eyes, so DO use gloves as advised.  I don't have goggles, so I planned how to use this quickly in case I started smelling fumes.  I did notice fumes the first time, and quickly fled the bathroom to get away.  For the second application, I refined my method.

This stuff activates IMMEDIATELY upon coming in contact with hot water, which is why I encountered fumes the first time "” my sink stopper can't be removed, so the stuff started activating BEFORE it left the sink to go down the drain.  So here are the steps I devised:

1.  Get an empty bottle that can handle hot water.  (It's for #6 below.)

2.  Put on rubber gloves.

3.  Open the container.  One application is 1 cup (8 ounces), so the container has 4 applications.  Look at the contents to guesstimate how much to pour (or just use a measuring cup, as long as it's completely dry.)

4.  If your sink stopper can be removed, do so.  If it can't be removed, visually plan how you'll pour the product slowly so that it's as close as possible to the drain (because you'll want to get it OUT of the sink and INTO the pipe swiftly.)

5.  Turn on the Hot faucet.  When the water actually gets hot, let it run for a bit to warm the pipes (as per the instructions.  (Make sure the product container or measuring cup is not right next to the sink "” even one drop of splashed water will activate the product.)

6.  While the hot water is running, get about 1-2 cups of it into the bottle you got.  You're going to use this water for any product that might be a few inches from the drain.

7.  Turn off the water.  DRY the sink thoroughly so that there's NO warm moisture.  If your stopper can't be removed, use toilet paper to dry the underside of the stopper.  Again, this product activates immediately with hot water.

8.  Pour the product into the drain or around the stopper.  Be careful, but swift "” when any of the product enters the drain, it will start activating because there's hot moisture down there.  So.....

9.  Quickly turn on the hot water faucet!  The product starts activating and slips into the drain.  IMMEDIATELY grab the water bottle and carefully pour that in a circle about 3" from the drain this to get any leftover product down the drain.

10.  Turn off the faucet and LEAVE the bathroom for a minute or two.  This is because a small amount of fumes will appear, and you should avoid breathing them.

11.  Return, turn on the hot water faucet, and let it run for a minute or so.  You should notice that the drainage is now fast and thorough.

In the future, I intend to hold my breath while doing steps 8-10, because I did smell a bit of fumes.  I'll also probably use a measuring cup in the future, which I'll then wash thoroughly in the kitchen afterward.

I had a clogged up bathroom sink, so I purchased Thrift to handle the clog. It is super easy to use, just put a scoop directly into the drain, pour hot water (used a kettle to heat the water) over it and it dissolves everything in the drain! There is an odor from the chemical but it isn't horrible, so poyr the hot water over Thrift and keep your head away from the top of the Trift product and the hot water. Use the product per the instructions and you will be amazed at what it can do!

This is one of the best products I have tried to unclog any sinks, I've been using it for quite awhile and it always works great

It works so well, and so quickly, you actually doubt it could possibly have already cleared the pipe. Trust me, it's that fast. Just be sure to use HOT HOT water for BEST results. It doesn't take much at all if you use HOT water.