We received this question yesterday: Should I use straw foam or gun foam? Gun grade foam is better for professional use. If you’re shooting foam every day; if you’re shooting foam for a living. You have more precision control. The gun applicators are reusable. Straw grade foam is better for DIY type applications. If it’s a small job; if it’s a quick fix, you’re better off using straw foam. It’s disposable you just throw it away when you’re done.