Did it not come with the instruction manual?
We have one..it's great..we call it the suck machine LOL
For supreme sucking power, you can use whatever cleaning solution they recommend but I've used pretty much anything and be sure to use hot, hot water.
Also, be sure to clean it on a regular basis..don't make the mistake I made of letting the dirty water sit there....then it just gets all gross and funky smelling...you need to make sure the fluids get changed each time you use it....
Oh, and vacuum before you suck....otherwise it will get all gunked up with hair and that is just never pleasant