Instruct: Classify an Amazon review as either positive or negative.
Query: If the purpose is to control diaper smell, then it doesn't work at all.

I admit that my review should really be broken into two parts -- before the biodegradable refill bags and after. Before the new biodegradable refill bags we were perfectly happy with the Dekor Plus. It worked well in controlling smells, was easy to operate, and was simple to change bags. The reason we wanted it was, of course, to control the smells of used diapers. However, Diaper Dekor recently introduced a new refill that is biodegradable. It does not work well in controlling diaper smells. Unfortunately, the biodegradable refills are the only option available. As such, I would recommend another diaper system. Also, I would question wether a biodegradable bag filled with non-biodegradable diapers really serves any benefit.