Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Can this product be used in conjunction with gray water applications, such as laundry water?
Document: I couldn't be happier with the product or company.
This product works well and is easy to install. I prefer it to a float that seems to get caught up frequently.
This float switch is great, it adjusts automatically when to shut off the pump and allows my pump to cycle less during a heavy rain, which will extend the life of the pump. The switch was extremely easy to set up. I highly recommend this switch.
I've had 2 of these switches for the past 8 years or so. These electronic switches have no moving mechanical parts, so they don't wear out or hang up on the side of the sump pit. They are extremely simple to install (took only 5 minutes for me). I finally had one of the switches acting up, so I called STAK. They offer some of the best one-on-one support on the planet!
I've been using this switch for over four years now, and it's simply bullet proof. It incorporates some really smart electronics to anticipate and alert the user about potential pump problems, like over current, short cycling, etc. It learns how long it should run to optimally drain any pit without running the pump dry, and it auto calibrates on a regular basis. Smart.
I've already tried a float switch and a diaphragm switch in past, so I decided I'd research further into the subject and came across electronically controlled sump pump switches. In my particular case, I removed the diaphragm switch from a 2.5 year-old RIDGID SP-330D sump pump and attached this controller in less than one minute. Started working on the spot just as advertised.The beautiful thing about this mechanism is that it's not a mechanism!! No moving parts.
I contacted the manufacturer and they told me that they had identified this problem and modified later units to fix this problem. I sent it to them and they updated the switch and replaced the sensor with the new style, all at no charge. Doesn't get any better than that!
Answer: no