Dear Jennifer, I think you have to feel whatever you are going to purchase. The best I have found was called "play sand" found at Orchard Supply. What is called play sand one place could be really different some place else. This play sand has the orange grains Cathy talks about. It is much coarser than some of the sand they have with the building materials. Sand varies greatly. I envy Cathy's cheap reliable source. I hope they load those 100 pound sacks for her and that her husband gets them on the other end. Mary Sue