How to Stop Dogs from Chewing and Swallowing Mulch

Why Dogs Chew Mulch

Dogs chew mulch for several reasons, including boredom, teething, anxiety, or simply exploring their environment with their mouths. Puppies, in particular, use their mouths to investigate new things, as their sense of taste and touch develops early. Older dogs may chew out of habit or because they lack mental stimulation. Swallowing mulch can be dangerous—dogs risk intestinal blockages, tooth damage, or gum injuries. The behavior is especially concerning if the mulch contains chemicals or is ingested in large amounts.

Prevent Access to Mulch

The most effective way to stop chewing is to limit your dog’s access to mulch. Keep your dog indoors or in a secured yard when unsupervised. If mulch is in a garden bed, use fencing or pet-safe barriers to block access. Remove any fallen mulch or debris from areas where your dog spends time. Prevention is key—dogs can’t chew what they can’t reach. This is especially important for puppies and dogs with destructive tendencies.

Provide Safe Chew Alternatives

Instead of letting your dog chew mulch, offer safe, appropriate chew toys. Use durable rubber toys, rawhides, or veterinarian-approved chew items. Rotate toys regularly to keep them interesting. For teething puppies, frozen chew toys or ice cubes with broth can soothe gums. Always ensure the chew toy is large enough that it can’t be swallowed whole. Providing variety helps satisfy your dog’s natural chewing instinct without risking harm.

Redirect and Train with Positive Reinforcement

When you catch your dog chewing mulch, calmly redirect them to a safe chew toy. Use a cue like “chew” or “toy” and reward them with a treat when they switch. Use a clicker and treats to reinforce the correct behavior—click and reward when your dog chooses the toy. Repeat this consistently to build the association. You can also place tempting items (like shoes or mulch) near safe toys and use the cue to guide your dog’s choice, rewarding only the correct one.

Use Deterrents and Supervision

Apply natural deterrents to discourage chewing. Wintergreen oil, which has a strong, refreshing smell, can be rubbed on mulch or other items to deter dogs. Avoid harsh chemicals. Supervision is critical—never leave your dog unattended in areas with mulch. If you notice chewing, use a distraction like clapping hands or a loud noise to redirect attention. Never chase your dog, as this can turn chewing into a game.