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My 10 kg dog is obsessed with chewing tubes — how can I store cat flea treatments to prevent him from eating a whole one?

Dogs · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Store all pet medications in a locked cabinet or a high, closed bin he cannot reach or knock over. Never leave used tubes or applicators on counters or in open trash cans — dogs will dig them out for the residual smell and taste. After applying a topical treatment to your cat, immediately dispose of the empty packaging in an outdoor bin. Consider using a childproof lock on the cabinet door, as some dogs are expert at opening cupboards. If he ever does get a tube, call your vet immediately with the product name — pyrethrins in cat formulas can cause severe tremors and seizures in dogs.

Why a 10 kg dog will risk anything for tubes

The plastic and residual medication in flea treatment tubes create an irresistible combination for many dogs. Your dog's size means he can likely reach countertops or open low cabinets with minimal effort, so standard "out of reach" spots may not suffice. The lingering scent of the medication acts like a beacon, especially if he's previously succeeded in stealing similar items.

Consider storing tubes inside a locking metal box or a childproofed medication container, even before placing them in a cabinet. Dogs this size can knock over bins or pry open lightweight containers. After application, rinse the empty tube under hot water to reduce odor before disposal, and take trash out immediately.

How to modify your routine after treating the cat

Apply topical treatments when your dog is confined to another room or outdoors, giving the product time to dry completely on your cat's skin. The first hour post-application is highest risk, as dogs may lick the cat or the application site. Keep treated cats separate until the area is no longer greasy—usually 4-6 hours for most spot-ons.

Watch for any attempts to chew towels or bedding where the cat rested post-treatment. Wash your hands thoroughly after handling the medication, as your dog might lick your fingers. Store the cat’s brush separately too—residue on grooming tools can attract curious nibbling.

When standard storage isn’t enough for a determined chewer

For dogs that have previously accessed medications, add physical barriers like baby gates to rooms where treatments are stored. Use containers with screw-top lids rather than flip tops—some dogs learn to open simple closures. A locking freezer bag inside a high-sided laundry hamper can work for temporary storage if you lack cabinets.

Rotate storage locations periodically; dogs memorize where they’ve found interesting items before. If your dog gets overly excited by the sound of pill bottles or crinkling tubes, keep decoy empty containers with unpleasant textures (like aluminum foil inside) in easy reach to discourage investigation.

Signs your dog found a tube despite precautions

Drooling, vomiting, or sudden hyperactivity within an hour may indicate he’s ingested medication. Some flea treatments cause muscle tremors that start in the hind legs. Check for puncture marks on tubes—a single bite can deliver a dangerous dose even if the tube appears mostly full.

Prevention matters most because symptoms can escalate rapidly in a dog this size. Never assume "he didn’t get much"—the concentrated formulas mean even licking the applicator tip requires urgent care. Have your vet’s number saved in your phone for quick access during application days.

The step-by-step response, from the first minute to the vet visit, is in our Cat Health Care Product Dangers emergency guide.

Open the full emergency guide: Cat Health Care Product Dangers →