I bought this maybe 1.5 years ago to replace a similar mop with non-reusable pads. For reference, my fiance and I have no kids, no dogs, and about ~600 sqft of hardwood in our apartment, and I use this maybe once a week. So definitely the light side of users. Despite this, it has broken TWICE, and is now unusable. 

The first was a spring that "returns" the handle to spray again, it made me have to wait ~7 seconds between spritzes, sucks but still usable. Today, the spray handle itself broke entirely! Again, I am not at all hard on the thing. Now it is entirely unusable, and the cartridges that go with it. 

Super disappointing, especially since it's marketed as "eco-friendly", when in reality it's so poorly designed that it's just a huge heap of plastic to end up in the landfill now.