Well, this little secret that I'm about to disclose won't deter the dirt completely, but will help tremendously. Baseball moms before me have shared the "Scotch Guard" secret...which totally makes sense. Spraying the pants with Scotch Guard protects them from getting the ground in dirt and makes washing a bit more easier. You may still need to "Shout" them out and do whatever washing ritual that you do to your pants. Basically the "Scotch Guard" ritual will prolong the life of the pants.
Before you start, always test an area before spraying the entire article of clothing. For you Rivercats and Pirate moms, I have already tested our pants. Simply follow the directions on the can. The trick is to spray them after each wash once the pants are dry.
Always use a towel underneath the pants to protect the surface...I use the bathtub for the spraying process.
Once you spray one side, flip pants over and spray. Let the pants dry. Once they are completely dry, spray both sides again.
Shhhh...now don't go telling other moms on the other teams....