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Bird barriers installed under solar panels need more than a one-time check—they should be re-inspected at least once a year in San Jose. Weather, nesting activity, and shifting roof tiles can compromise the integrity of your birdproofing. In neighborhoods like Almaden Valley and Willow Glen, pigeons and squirrels are persistent, and even small gaps in solar mesh can lead to nesting. Re-inspections during regular solar panel cleanings are the best way to catch breaches early. San Jose technicians check for signs of droppings, debris, and loosened fasteners that indicate barrier failure. Replacing or tightening these guards helps avoid costly damage to wiring and panel mounts. It also prevents droppings from accumulating under the panels, which can create odor and hygiene issues. Birdproofing works best when monitored and maintained regularly. If your solar system is older or your roof hosts frequent bird traffic, annual re-inspections are a smart safeguard.