Went back to Lowe's today to get some more sand today. I had bought some a couple weeks ago for my flooded run and it turned green the next day. I had put a post on here asking for help without much resolution other than it might still be too wet. So, off to the store I went to get some more. When I went to purchase the Sakrete Play Sand (the same stuff I bought last time) the cashier was alerted not to sell it because the product was under investigation. The manager then came out and verified that it was indeed under investigation for turning green and growing mold! Closer inspection of the bags I was about to purchase showed small patches of green in the bags. The same color that my run turned. The manager was very nice and refunded me for the 24 bags I bought previously without a receipt or product. He stated the the company was refunding them for all the product they received. If you purchased Sakrete Play Sand in the past month or so and it turned green, I would investigate with the store you purchased it from. More concerning is not knowing what my girls have been exposed to the past couple weeks.