Everyday run of the mill Hay Bales won't stop a spit wad. Check with your local archery club and ask them where they buy their archery bales. Archery bales are hay, but its compressed really tight and banded with metal rather than twine. You can also call around to farm equipment supply type places and see if anyone sells excelsior bales in your area, they're super tight and last forever. Just remember that excelsior or archery bales will last a couple years, but you have to keep water from saturating the bale. If either type gets soaked there finished.