Shouldn't steroid and drug enhancements be more strict in Major League Baseball?

There are a few minor league guys that if they get caught again they are on lifetime ban. They do enough testing. The first time is a 50 game suspension. The second is a 100 game suspension and the third offense is a lifetime ban. Baseball has made great strides to improve the game and I think they are doing a good job at cleaning up the sport. I think that if a guy is gifted enough he would be smart enough to realize he can reach the big leagues without the help of steroids.