We are having a play structure installed in a few weeks and need to decide what to put under it. The rubber mulch is more expensive (I think about double) than the wood chips, but apparently wood chips need to be replaced every few years. We are in the DC area. I'm not sure if weather affects one more than the other. Both are available from the local company installing it, so I would think that they both can withstand the weather or they wouldn't sell it.

Anyone have any experiences with either?

Thanks!