Left a strong chemical smell in my home, smears all over the laminate flooring. I had to mop the floors over again due to the smell and smears, because I feared that whatever they used could harm my pets. Didn't dust everything, just some things. I keep a fairly clean home, but I have pets and I work 2 jobs, so this was a gift from a good friend. I have no idea how much she paid, but she deserves a refund. I also have a new hole in my utility room door that wasn't there before. I'm sure it was an accident, but it's still annoying.