Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: How do I remove the dirty water?
Document: I have two dogs and bought this cleaner to help remove a stain where one of them threw up the night before. Although it did remove the stain, it left my carpet soaking wet! I used almost the whole tank of fluid and it didn't even suck up a tablespoon of dirty water. I continually ran the suction over it, but it didn't work. It's going back to the store tomorrow.
I had a cordless Bissell Spotlifter for years and it finally died. I got this one to replace it. It does not suction well and the roller grabs too much carpet fiber. It also does not do a continueous spray for dispensing the cleaner. The retainer for the dirty water is difficult to remove also.Overall I am not well pleased and will probably look for another product to replace this as soon as possible and hope I can sell this one for a decent amount as a used item.
I can't say enough good things about this cleaner. It is fantastic. I've had a full size carpet shampooer and a Little Green Machine. I prefer this over both of them. It is lightweight, fast, convenient, easy to use, inexpensive, easy to clean, holds an adequate amount of fluid for quick cleanups, has great suction, easy to refill, sprays in a about a 5 inch wide path, has two spinning brushes that are in a plastic pop-in housing that is easy to remove and clean, has a nice long cord and a good size holding tank for dirty water.
Easy to use, but a little difficult to remove the compartment for the dirty water. Haven't used it a lot yet.
I have a unit in my Florida home and used it for several months - very successfully as a SPOT STAIN REMOVER - NOT a "carpet cleaner".Because of that success I purchased another for my NY home with the same very acceptible success rate - in disagreement with the multiple negative reports on the internet reviews.Firstly - the noise. Yes - but this thing has a POWERFUL motor that does not slow down under pressure! Noise - so what!Then - the cleaning fluid container does NOT leak for me. That compartment is easily removed with pressure on the two side finger rests.The dirty liquid compartment IS difficult to remove - but it does come out after a bit of manipulation.My successful technique is done following liquid preparation according to instructions with the same solution that came with the unit.
I like bissell products and have tried to use this  2 times but so far I haven't been able to remove the water container in the back.
This works decently.. However this is something you can use for any easy mess. The water spray you need to press repeatedly, does not spray constantly if button is held like similiar products. Does clean messes but if you are looking for something that you can use on a bigger mess or a hard to remove stain this is not it.Water tank is also tiny and with just a few sprays is empty. I have four kids and a dog so this does the job and gets a point for accessabilty, Although I end up using my big steamer half the time anyway.
I have owned this for a couple of years. With three cats in house, the opportunities for cleaning up hairball aftermath abound.Pros:1. The unit is lightweight and easy to manage2. Spots will lift if they are recent3. Suction is adequate to substantially remove the cleaning liquid from the carpet or upholstery4. Cord length is adequate for the average size roomCons:1. Not adequate to remove older or dried stains2. Heated water would be more effective3. Disassembly for cleaning is a little cumbersomeOverall, this unit is better than nothing.
I, in fact, did do this. I used nearly the whole tank of solution and in the dirty water tank was at most 1 tablespoon of water that had been suctioned! Don't waste your money.
We bought this product along with our new puppy. After three days we returned the Bissell. The machine was heavy and had absolutely no suction power. After three tanks of water and solution, the dirty water tank barely had any water and the carpet was soaking wet (even after holding the machine at the recommended angle and really pressing it into the carpet). I would not recommend this product.
Answer: You simply pull the clean soap dispenser off, then remove th elower chamber that has the dirty water, open the screw off lid, and wash it out. its pretty simple. I use mine a few times a month, saves me dragging the big cleaner out