Prevention
- Seal the deck: Apply a high-quality sealant resistant to moisture and pests.
- Trim overhanging branches: Cut back tree limbs that give squirrels access to your deck.
- Remove food sources: Keep birdseed and other attractants away from the deck area.
- Install squirrel-proof bird feeders: Use cages or baffles to block squirrel access.
Repellents
- Pepper spray: A mixture of water and hot pepper flakes can deter squirrels.
- Commercial repellents: Products with scents squirrels dislike.
- Motion-activated sprinklers: Startle squirrels away.
- Ultrasonic repellers: Emit unpleasant sounds, though effectiveness varies.
- Cayenne pepper: Sprinkle around the deck perimeter to irritate noses and paws.
Physical Barriers
- Mesh netting: Cover the deck with fine netting squirrels cannot climb through.
- Metal flashing: Install around the perimeter to block climbing.
- Slippery surfaces: Metal or tile surfaces are difficult for squirrels to climb.
Other Measures
- Patch holes with steel wool or caulk.
- Consider trapping and relocation as a last resort.
Consistency and patience are key. Choose methods appropriate for your environment and be prepared to try different combinations.