No cons here. No weeds, no smell from the dog, doesn’t get too hot in the summer, hasn’t faded (3 years down) and hasn’t flattened (we do hoover it every now and then in the summer so this may help). Hasn’t effected the wildlife in our garden as we have plenty of flower borders, trees and veggie patch. The hedgehog doesn’t seem to mind it at all and all the nesting birds don’t either