Bird Proofing
Pigeons, gulls, and occasionally other birds roosting on roofs, ledges, or balconies cause more than a mess problem, droppings are corrosive to brickwork over time, and blocked guttering from nesting material leads to water damage that's considerably more expensive to fix than the original bird problem. Proofing typically means spikes or netting fitted to the specific areas birds are using, plus a clean-up of existing mess and nesting material where needed.