I have regularly used a steam mop on my engineered floors for almost 6 years with the steam mop Manufacturer’s regular pad. This has worked out fine for me. I have both a dog and cat who believe the floor was installed to be their own personal drag strip and next Grand Prix race location. My contractor told me that the slight bit of moisture from the steam cleaner would help remove any dents that I might actually cause in my floor should I actually be able to accomplish such a thing…(And yes, I did dent it once by dropping a large piece of broken slate directly on its corner into the hardwood floor. Steam was good, not perfect…????) The floor does suffer scratches as any polyurethane-type sealant would…I treat my floors just as I did my regular hardwood floors in a previous home. I do additional extra “maintenance” cleaning on all wood flooring at approximately three month intervals : I wash them with Murphy’s Oil Soap AND rinse them with clean water. When they are dry I use one of commercially available products that are designed to “Clean and Shine” wood and laminate floors or a product that “polishes and restores that new look” to all wood floors. Any product in that category will do the job to remove surface scratches, e.g. dog and cat and bring the luster back to the floor. Follow the manufacturer’s Instructions on the container for the best results. I like those I can apply with spray bottle and a clean dust mop, using the mop to polish as I go. That’s it! (One word of caution: engineered hardwood will not hold up if water seeps under it. The affected plank(s) immediately buckles and no longer lay flat and have to be replaced along with the planks around it. Take care with installation at entry doors or areas with exposure to water).