Our advice here starts with the canopy, not the ground — watch where the damage sits relative to it: fruit stripped high in the branches, a tomato bitten once and dropped straight down below a limb, or bark peeled from a spring branch for nest lining, and you are almost certainly dealing with a tree squirrel working from above rather than a ground-dwelling relative needing a burrow nearby. They forage in full daylight, hollow or fully consume the fruit they take, and are comfortable two to five feet up or well overhead. The distinguishing move is simple: trace the pattern back to the treeline. What genuinely slows them down is caging fruit clusters in hardware cloth and wrapping isolated trunks in smooth metal collars — though collars only work where no fence, roofline, or neighboring branch offers a jump route within eight or ten feet, which is more often than gardeners expect. An owl decoy buys about a week before a squirrel realizes it never moves. Capsaicin on nearby foliage works only until the next rain washes it off. Honestly, netting the last week before harvest and ceding a fruit or two is usually cheaper than trying to out-climb them.
Signs it's them
- When it happens: Daytime.
- What gets hit: Ripe fruit only.
The distinguishing check: Check whether the damage tracks the treeline: fruit taken high in the canopy, one-bite-and-dropped tomatoes below a branch, or bark stripped from limbs in spring (they peel it for nest lining) — a tree squirrel works from above, where a ground squirrel needs a burrow entrance nearby.
What actually works
Exclusion beats deterrence — every time, for every culprit on this list. Start here:
Cage the fruit and deny the launch points
½-inch hardware cloth cages over ripening fruit clusters plus smooth sheet-metal trunk collars 18–24 in tall on isolated trees — collars only work where no fence, roofline, or neighboring branch offers a jump route within 8–10 ft
Deterrents — honest expectations
Deterrents are a bridge while exclusion goes in, not a fix. Every one of them fades as the animal learns nothing bad actually happens.
Predator decoy (owl or hawk silhouette)
Place near the fruiting tree, move it every few days.
Tree squirrels are quick studies — a decoy that never moves on its own stops working within a week.
Expect about 7 days before they adjust.
Motion-activated sprinkler
Cover the trunk or the most-used approach route.
More durable than a decoy, but an arboreal route around the spray zone gets found eventually.
Expect about 21 days before they adjust.
Capsaicin spray on fruit-adjacent foliage
Reapply after rain or irrigation; never spray the fruit itself.
Works while the coating lasts, but it washes off — a maintenance rung, not a set-and-forget.
Expect about 14 days before they adjust.
Never do this
- Ultrasonic repellers — no reliable evidence against squirrels
- Glue traps — inhumane and catch songbirds as often as squirrels
- Greasing trunks or poles — fur-matting makes it inhumane, and it fails anyway
Netting just the final week of ripening and ceding the odd fruit is often cheaper than a squirrel-proofing arms race you will not win.