Unless you are going to get legal drugs out of Racing it's going to be very hard to eliminate the illegal drugs.
I've been betting first time LSX horses since before this information began appearing in the Form. But it's also been a very long time since I believed it always was simply Lsx that was moving these horses up. And the science is, Lsx is a diuretic that helps wash other drugs out of the system quickly.
Now, I'm not saying that trying to symies the proliferation of illegal drugs in racing is a completely wasted effort. Only that it's naive to think the competetive purity of the game can be maintained as long as other "masking drugs" can be adminstered legally.