Bird Spikes are an option only before the birds arrive. We don't recommend them when they are already using the building.
Bird Spikes are most commonly used for pigeon sized birds. Sparrows are able to drop nesting material into the spikes until a they can make a nest can on top.
Call us today to get a quote for your bird problem and installation of bird spikes if applicable to your situation. We always recommend the solution that will best suit your needs.