In Western Australia (I think), cats are already restricted to the house plus exterior deck/veranda/patio, which must be caged to prevent them from going furthe

In Western Australia (I think), cats are already restricted to the house plus exterior deck/veranda/patio, which must be caged to prevent them from going further. This is referred to as a ‘catio’. I suspect that, given the bugs, putting an insect screen around your patio has other benefits too.