Slime Brand Fix a Flat- Wheelbarrow Tire Repair

Slime brand tire sealant did the trick. No more pumping up the wheelbarrow tire every damn time you want to use it. It's available on amazon at the links above or at war mart and automotive stores.
Once you've followed the directions on the slime bottle be sure to rotate the tire around after filling it with air so as not to let the slime settle in one area of the tire. It's really quick and simple to use. Glad I did it. My only regret is waiting so long to use it.