Instruct: Classify a given review into positive or negative sentiment.
Query: TOY WILL SCRATCH YOUR HARDWOOD FLOORS!!

When I bought this walker I did not realize that the rear wheels are not on an axle and therefore do not spin easily (they are secured with screws). The wheel control is on the front wheels, so you would think that the rear wheels would spin easily. They do not, and will seriously scratch your hardwood floors. We had our floors refinished two years ago and now, due to this toy, they will need to be refinished again. This is a very poor design. And, as others have mentioned, the doors come off very easily. My son likes playing with the doors, but gets frustrated when they keep coming off. The other toys on the walker do not interest him at all. I will say that the walker is sturdy.