Pigeon Patrol always recommends before installing any of its deterrent products, remove any unintentional food sources, nests and droppings. Remember to clean any infected area thoroughly. Many deterrent products are not a one-shot instant solution and may require continual positioning. Fixed deterrents (such as spikes and netting), ensure that you have covered all possible areas where bird may roost or nest. Remember to always follow your cities rules and regulations on nest and bird deterrents and removal.