I use wood chips as a dry deep litter in my coop. It never smells. I only clean out the coop maybe twice a year, once in the spring after the snow melts, and then in late fall before the snow comes again. To keep things fresh, I might stir up the wood chips every month. If I start to detect any smell, I'll add some fresh wood chips and stir it up. Most of the time, in my coop, I can get by with tossing some chicken scratch in the coop and just let the chickens scratch and turn over the wood chips themselves.
At any rate, I'm a really big fan of using wood chips because my coop never smells and I only clean it out twice a year. In the past, I have used things like sand and straw, but had to constantly clean the coop to keep it from smelling.
Finally, let me say, I suspect your neighbors are complaining of a smell that is probably only in their mind. If you care for your chickens and your finely tuned nose does not detect any offensive smell, then I highly doubt your neighbors can either. Chances are they might think that you having chickens is somehow devaluing their property values. Also, some neighbors might be more upset about a rooster crowing early in the morning, so maybe they are complaining about smell as a way to put pressure on the chicken owner. Lots of residential areas have bans on roosters.