My husband is a country guy & wants to do the gender reveal where he shoots tanerite with a shotgun & the color powder blows up & it goes everywhere. My only thing is, where do I go to find a large bag of the chalk powder that I'll need? What stores carry that? I won't have time to order it online. Didn't know if a Home Depot, Lowe's or Walmart might carry something like that. Any help would be greatly appreciated!! 💙💗