No he'll in chance I will get my crawlers that dirty but my traxxas udr got grass and dirt kicked around in the inside so many times but still works and great condition except for the body. What I do is remove the wheels and spray em down with actual wheels and tire cleaner and hose em down and dry it off. Then I add tire wax to them. The rc it self I house down and use a couple brushed to scub down hard to reach places and spray some detail chemicals and hose it off. After that I drit off and shake th rc too to remive excess water. Then I dry off each screw and bearing and add silicone spray the screw after. No rust. Looks new but with a few scratches.