Cleaning Solution FoundOperating Rate
The W400 cleans at a rate of approximately 12 seconds per square foot, consuming 0.12 fluid ounce of water per square foot. Based on 20 minutes and 12 fluid ounces to cover a 10 x 10ft area.
Tank capacity is about 1 quart or 32 fluid ounces giving a range of 266 sq.ft. over run time close to an hour.
 Official capacity 845ml (3.5oz less than a quart), per review with details at
[url]845 ml of clean water in a container provides approximately 215 sq ft of cleaning.[/url]Cleaning Solution
Bissell and others make corded stick cleaners with mechanisms similar to the W400, which is just a robotic motion version of those. All those full size roller washers have cleaning solutions sold by the makers. I had mentioned before the Proctor & Gamble Mr. Clean Professional Finished Floor Cleaner which P&G notes as suitable for robotic washers. However, this material is sold in gallon jugs supporting 120 gallons of solution, suitable for cleaning service businesses with volume use. Gallons go for $14. It would take years for me to use one jug of this taking up an annoying amount of storage space.
Bissell sells a 32 oz bottle of Multi-Surface cleaner for its Crosswave stick washer which appears to be more dilute. They also have other special Pet cleaners etc. which might be less suitable. The bottle does not specify the usage amount, and I could get only a rough idea examining the washer in a store. They say only to add fluid between two marks on the tank, which looked like they might take 6 cubic inches or 3 fluid ounces on a quart size tank (I could not get the tank out to measure it more precisely -- some owner will have to report).
More attractive was one from Hoover, which sells a stick washer with flat spinning bristle brushes and water extraction similar to the others. Hoover's 32 oz bottle of "Citrus & Sage Multi-Surface" cleaner, for "sealed floors and area rugs" washers in white bottle, pet safe, specifies 2 fluid oz per quart dilution. It is a tad cheaper than the Bissell, around $8 in Walmart, and appears a little more concentrated for longer use. I only need 1 pint of water with 1 oz or 2 tablespoons of cleaner added for the 100 sq ft kitchen (actually only 12 ounces consumed).
"Sealed floors" probably means not suitable for stone floor; glazed ceramic tile is another matter.
As these are solutions you shake them before use to insure good mixing.
I tried this in the W400 and noticed no foaming, no interference. How much these materials improve cleaning I do not know, but P&G advertises great improvement over water for its material. It is pretty common to clean floors with some sort of cleaning fluid.
For good measure I rinse out the clean water tank as well as the discharge tank when using the detergent, just to minimize residue.
Last edited by glnc222
on June 15th, 2019, 7:44 pm, edited 2 times in total.