I have bought several different types of sand to try the vinegar method on, and when I put some Best white play sand in a glass of vinegar it fizzed. Now this is not the Best sand that you get at Home Depot. I got this at Toys R Us, and it’s also in a different package than the one at Home Depot. Now does that sound right (that Best sand fizzed in vinegar, white vinegar at that)? Or could their have been another reason for the sand to fizz?