SEL WARWICK Mag Chloride Flakes

Has anyone used the SEL WARWICK brand magnesium chloride flakes for dust control in an indoor arena with sand footing? Their site states it is “safe for animals and vegetation and will not dry out hoof leather.” Waiting for a return call from them. They are located in Canada, I can source them locally here in the US.

TIA

I have used Mag Chloride for 20 years and never had a problem! I can’t remember the brand name but it was pure mag.