No, Juicy Fruit gum does not kill moles. There is no scientific evidence that any brand of chewing gum controls, repels, or harms yard moles. Michigan State University Extension lists this specifically as a common mole myth, noting there is zero evidence to support the recommendation. The idea has circulated for decades among homeowners, but it doesn’t hold up under scrutiny.
Why the Gum Trick Doesn’t Work
The folk theory goes something like this: you unwrap a stick of Juicy Fruit, roll it up, and drop it into an active mole tunnel. The mole supposedly eats the gum, can’t digest it, and dies from an intestinal blockage. The problem is that moles are insectivores, not rodents. About 90 percent of a mole’s diet is earthworms, with the rest made up of insects and other small invertebrates that live underground. They do not eat plant roots, bulbs, seeds, or anything that resembles a stick of gum.
Moles locate food by feel and smell, hunting for soft, wriggling prey in moist soil. A flat, dry piece of chewing gum sitting in a tunnel doesn’t mimic anything a mole would recognize as food. Even if a mole investigated the gum out of curiosity, there’s no reason to believe it would swallow it. As one Michigan State Extension specialist put it, the best you’d end up with is “moles with good breath.”
Make Sure It’s Actually Moles
Before spending time on any control method, it helps to confirm what’s tearing up your yard. Moles create two signature signs: raised ridges of soil just below the surface (from shallow feeding tunnels) and volcano-shaped mounds of dirt pushed up from deeper tunnels. If you’re seeing golf ball-sized exit holes instead, you likely have voles, which are small rodents that sometimes move into abandoned mole tunnels. Voles eat plant roots and bark, leaving quarter-inch side-by-side tooth grooves on woody stems. The control methods for each animal are completely different, so identification matters.
What Actually Works Against Moles
Purdue University’s Plant and Pest Diagnostic Lab is blunt on this point: the only two methods that effectively control moles are baits they’re attracted to and physical trapping. Everything else, including gum, grub treatments, vibrating stakes, and mothballs, falls somewhere between unproven and useless.
Trapping
Trapping is the most reliable option and doesn’t require any chemicals. Two types of traps work well depending on tunnel depth. Scissor traps are better for deep, subsurface runs. Harpoon traps are easier to use when tunnels are close to the surface. Placement is everything. To find an active tunnel, flatten a section of the raised ridge with your foot and check the next day. If the mole has pushed it back up, that run is active and worth targeting. The best spots are straight runs that follow a structural edge like a sidewalk, curb, or foundation wall, because moles use these as regular travel routes between their nest and feeding areas.
Worm-Shaped Baits
A newer class of bait is designed to look, smell, and taste like earthworms, which solves the fundamental problem with gum: moles will actually eat these. The baits contain a poison that disrupts energy production in the nervous system, leading to paralysis and death. You place them directly into active tunnels using the same method described above (flatten, wait, confirm activity). Like traps, placement in a regularly used run is critical.
Castor Oil Repellent
If you’d rather push moles out of an area than kill them, castor oil repellent is the most studied option. You can buy commercial products or make a concentrate at home by mixing 6 ounces of unrefined castor oil with 2 tablespoons of liquid dish detergent in 1 gallon of water. Dilute that concentrate at 1 ounce per gallon and spray it over the area you want to protect, which covers roughly 300 square feet per gallon of diluted solution.
The key step most people skip is watering. Apply half an inch of water before spraying the repellent, then follow up with at least an inch of water afterward to push the castor oil down into the soil where the moles are active. You also need to treat the entire area, not just the perimeter. Moles will simply tunnel underneath a border application.
Castor oil doesn’t kill moles. It makes the soil and the food in it taste unpleasant, encouraging them to move elsewhere. That “elsewhere” may be a neighbor’s yard or a different section of yours, so it works best when you’re protecting a specific area like a garden bed rather than trying to clear an entire property.
Why Grub Control Doesn’t Solve It Either
Another persistent myth is that eliminating grubs from your lawn will starve moles into leaving. While moles do eat grubs, earthworms make up the vast majority of their diet. Your lawn would need to be almost completely free of earthworms for a mole to consider relocating, and a healthy lawn full of earthworms is exactly what most people want. Killing grubs may slightly reduce mole activity in some cases, but it won’t eliminate the problem and can cost more than trapping or baiting directly.