I live in Florida and have been running my Panzer 4 with metal upgrades outside doing my best to kill this thing. You really wouldn't want to mess with it in soft beach sand unless your going near the water to the hard wet sand. Unfortunately in Florida we have sand every where not just the beaches. I have found the Panzer 4 can get threw small patches of 3" deep sugar sand, if the area is to large it starts to bury itself. With wider tracks and less weight the Dog may fair better but probably not too much.

Ill be honest, I've been lurking the boards a while now waiting for my tank to get in and when it did I was so eager that I did not take the time to break it in or seal it up before I sent it straight into the field (I do throw pieces of painters tape over the battery cover and switches.). That said I have checked inside the hull and it has stayed pretty clean. The biggest problem seems to be dirt dust coming in the turret from the side hatches.