How does one remove the blue stain of Miracle-Gro from a concrete deck?

Question

The stuff won't come out :S

Answer 1

Try a mild solution of bleach and water.  Have you ever smelled of the wood deck cleaner.  High amount of chlorine/bleach.

Answer 2

Bleach ( not color safe)

Answer 3

Have you tried oxyclean? I've had good luck with that stuff...