Crayola Nontoxic Anti-Dust Chalk, White, 12 Sticks/Box (50-1402) Anti Dust. 12 sticks White Chalk Great for the classroom. 12ct Anti Dust White Chalk Sticks Erases easily. Anti Dust. 12 sticks White Chalk Great for the classroom. 12ct Anti Dust White Chalk Sticks Erases easily. Low-dust chalk for use on most chalkboards. Makes clean, smooth lines.