E-bay, building supply companies. I'm sure your hubby or one of his friends will know a local place. Even ask the guy at the local hardware.
chicken mesh nailed. Bash in nail half way and then fold over to catch wire. Timber can also do the trick. I put a half copper log under our gates at the moment to keep in puppies and have meshed the lower half of the gates and secured with zip clips because the puppies could walk right thru the farm fence.