We use a good quality car wash soap, Turtle Wax seems to come along pretty often, but something similar. Keeping it waxed will make life much easier....if you're short on time, just wax the front where the bugs tend to congregate. We have one of the soft bristle, long handle car wash brushes and it does a fine job. Easy over the decals and no pressure washer. Doing all this by hand lets you also notice any places that might need a touch up on caulking or other maintenance. While you're at it, invest in a bottle of black streak remover...you'll need it, too.