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MiracleGro urea residue removal?

  1. Jun 27, 2015 #1
    I use large quantities of Miracle Gro fertilizing large pots of annual flowers. Anyone know a way to dissolve the white residue that builds up on stone or tile after repeated applications (I assume this is the insoluble urea in the product.). I usually wash down these surfaces after the stuff has drained out but cannot do this all the time, thus the problem. I have been fairly successful with Muriatic but the neutralization tends to be messy and leaving it too long has overetched some of the surfaces I have treated. Any ideas out there?
  2. jcsd
  3. Jun 28, 2015 #2


    Staff: Mentor

  4. Jun 28, 2015 #3


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    Staff: Mentor

    I doubt the residue is just urea, as if it were it would be quite easy to remove just with water.
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