Major League Baseball is putting the final touches on a memo that will detail the sport's rule against foreign substances, according to sources.

The document will be forwarded to teams sometime in the next few days and presented to coaching staffs and players.

According to sources, the actual order for umpires to enforce the rule might occur a week later.

MLB's hope is that pitchers who use foreign substances like Spider Tack and homemade super glues will be scared straight by the public conversation and stop using them