Hey all, I just wanted to give you a heads up, I had a bunch of stabilizer sand fail this year, it never hardened up right and was washing out. Really pissed me off since I pitched it as an added cost to the customer, then it didn't work. So I called the manufacturer and low and behold, I actually got some help. Turns out the manufacturer will come and powerwash the bad sand out and replace it for free, they had a problem making some sand and didn't put enough glue in some batches. I have to admit, I was mad enough to never use their product again, but I was impressed with the customer service. My sand was Techo branded, but I understand that Alliance DP makes the sand for Techo block, EP Henry, Nicolock, and Alliance Super Sand, plus who knows what else. If any of you had any stabilizer sand fail, you should definately get in touch with the manufacturer and try to get your jobs fixed. The guy I talked to was Bob Filteu, with Alliance Designer Products, 514-942-2562. Good luck in the New Year everyone.