Do squirrels eat tomatoes? Yes, regularly. They are far from the only ones, though, and that is where most gardeners waste their effort. (If the damage looks more like an insect’s work, start with our tomato pests identifier instead.)
A half eaten tomato on the ground does not automatically mean squirrels. Rats, birds, rabbits, and even hornworms leave their own distinct signatures behind.
This guide covers how to identify the actual culprit. It also covers what genuinely works against squirrels, rats, deer, and birds, based on university extension research rather than guesswork.
The short version
Squirrels, rats, birds, rabbits, deer, hornworms, and even slugs will all eat a tomato given the chance. The damage pattern and timing tell you which one you are dealing with.
Physical exclusion beats every other method for squirrels and rats. Hardware cloth, metal mesh, or a full cage around the plant works far better than repellents or scare devices.
Deer need real fence height to stop, not a token barrier. University research puts the reliable minimum at 8 feet for a standalone fence.
The lineup: what is actually eating your tomatoes
University of California Master Gardener research narrows the suspects down to a short list. Birds, rabbits, ground and tree squirrels, rats, hornworms, slugs, and snails are the animals actually documented eating garden tomatoes.
Each one leaves a different kind of evidence. Learning to read that evidence saves a lot of wasted effort on the wrong fix.
Squirrel or rat? The pattern most gardeners get backward
A classic complaint online describes a tomato with a single bite taken out of it. It is usually still hanging on the vine.
Most gardeners blame squirrels, but UC Master Gardener research points somewhere else. Squirrels typically remove a tomato entirely and carry it off to eat elsewhere.
What is left behind in the garden is often just a small remaining piece. It is not a lightly nibbled fruit still sitting on the plant.
Rats behave differently. They eat while clinging to the plant itself. That concentrates their damage on the top of the fruit, and the rest stays attached to the vine.
Timing settles the question fast. Squirrels are active only during the day. Rats do their damage at night, so a morning check on overnight losses points straight to the culprit.
Ruling out birds, rabbits, and hornworms
A pecked tomato still firmly attached to the plant usually means birds, not squirrels. Squirrels tend to remove the fruit, while birds peck in place and leave the damaged tomato where it grew.
Rabbits rarely bother with ripe fruit at all. UC Master Gardener guidance notes they generally prefer succulent green vegetation over a ripe tomato.
Hornworms leave an entirely different kind of damage. They strip leaves and chew large chunks out of green fruit still on the plant. For a closer look at spotting and managing them, see our tomato hornworms guide.
Squirrel proofing that actually works
Squirrel control has a genuine best answer, and it is not a gadget. UC Master Gardener research describes repellent sprays as having questionable effectiveness against squirrels specifically.
Frightening devices fare worse over time, since squirrels adapt quickly. A decoy owl or motion sprinkler that worked in week one often gets ignored by week three.
Physical exclusion is the method that actually holds up. Build a cage around the plant with hardware cloth or chicken wire. Use mesh with holes no larger than half an inch, and squirrels stay out completely.
A solid metal barrier works for a different reason. Squirrels cannot get traction on a smooth metal surface the way they can on wood, wire fencing, or a tree trunk.
If it turns out to be rats
Snap traps are the standard fix once rats are confirmed as the culprit. UC Master Gardener guidance adds an important detail most people skip.
Rats are wary of new objects in their environment. Leave traps baited but unset for a few days first. That lets rats get used to them, and it makes the eventual catch far more likely.
Deer: the fence height that actually stops them
Deer damage calls for a different scale of solution entirely. Cornell Cooperative Extension puts the reliable standalone fence height at 8 feet of woven wire, built to fully enclose the planting area.
Shorter fencing still helps, just not completely. A 5 to 7 foot fence deters some deer, but it does not guarantee exclusion, since a motivated deer can clear that height.
Electric fencing offers a lower profile alternative. An electric alternative uses a 3 wire design with strands at 18, 36, and 54 inches. Some versions pair that with cotton strips soaked in repellent for an added layer.
Repellent sprays can help too, but only with real commitment. Plan on reapplying most products on a 4 week schedule, since rain and new growth both wear off the effect over time.
Local deer density matters for how seriously to take all of this. Areas with fewer than 10 deer per square mile, and plenty of natural food nearby, may get by with a lighter fence and no electric component at all.
Birds: netting that actually works
Netting is the most reliable physical barrier against birds. The research backing it comes from commercial fruit growers rather than home gardeners.
A Utah State University study of exclusion netting in vineyards found real results. The netting blocked bird damage with about 95 percent effectiveness.
That number comes from grapes, not tomatoes, and it is worth saying so plainly. The principle still transfers, since netting works by physically blocking beak access rather than doing anything specific to grapes.
Coverage matters more than product choice. Netting draped loosely with open gaps at the base gives birds an easy way in. A properly secured, fully enclosed cover keeps them out for the whole season.
Frequently asked questions
Do squirrels eat tomatoes?
Yes, regularly, and they typically carry the fruit off to eat elsewhere rather than nibbling it in place. A tomato left half eaten on the vine is more often the work of rats or birds.
How do I tell squirrel damage from rat damage?
Squirrels are active during the day and tend to remove fruit entirely, leaving little behind. Rats feed at night while clinging to the plant, which concentrates damage on the top of fruit still attached to the vine.
What actually keeps squirrels off tomato plants?
Physical exclusion works best. A cage of hardware cloth or metal mesh with holes no larger than half an inch, or a smooth metal barrier squirrels cannot climb, outperforms repellents and scare devices.
How tall does a fence need to be to keep deer out?
The reliable minimum is 8 feet for a standalone woven wire fence. Shorter fences in the 5 to 7 foot range help but do not guarantee full exclusion.
Does netting really stop birds from eating tomatoes?
Yes, when it fully encloses the plant with no gaps. Research on netting in commercial fruit crops found it blocked bird damage at close to 95 percent effectiveness.
The bottom line: do squirrels eat tomatoes? Yes, but rats, birds, deer, rabbits, and hornworms are all candidates too. The fix only works if it matches the actual culprit.
Physical exclusion consistently outperforms sprays and gadgets, whether that means hardware cloth for squirrels, real fence height for deer, or full netting coverage for birds. For the wider range of tomato fruit damage this guide does not cover, see our tomato fruit problems guide.
SOURCES
University of California Agriculture and Natural Resources, UC Master Gardener Program of Contra Costa County: Who Is Eating My Tomatoes? https://ucanr.edu/blog/hort-coco-uc-master-gardener-program-contra-costa/article/who-eating-my-tomatoes
University of California Agriculture and Natural Resources, UC Master Gardener Program of Contra Costa County: Can You Tell Me What’s Eating My Beautiful Tomatoes? Squirrels? https://ucanr.edu/site/uc-master-gardener-program-contra-costa-county/article/can-you-tell-me-whats-eating-my
Cornell Cooperative Extension, Monroe County: Reducing Deer Damage. https://monroe.cce.cornell.edu/resources/deer-damage-reducing
Utah State University, DigitalCommons, Wildlife Damage Management Conference Proceedings: Bird Damage Control in Vineyards Using Exclusion Netting. https://digitalcommons.usu.edu/wdmconference/1991/all1991/18