Supa Bird Cage Tidy Standard Assorted Bird cage seed catcher with elastic strap on top and bottom. Seed catcher fits securely around your bird cage to eliminate messy seed scatter on your floor. Top and bottom is open (skirt style) and with heavy duty elastic strap which holds the seed catcher/guard snugly in place and eliminates shifting. It is very easy to wear any type of cage (square, rectangular or round cage).