Don’t have a new pair of shock dust covers? Here is a simple cheap solution. Take a Nitrile glove and a rubber band cut the small finger off and put a small slit in the bottom. Then slip it over the shock and use the band to hold it in the grooved part of the shock body. Put the spring back on and use the bottom to hold the cover in place. Then twist a couple of turns to make a tighter fit, and there you go no more dirt in your shock.
Easy Shock Boots