When your dog keeps scratching, licking, or developing rashes, it’s easy to blame the food. But while food allergies do exist, we should not discount environmental allergens. According to an article by WebMD, it is believed that only ten percent of all allergy cases in dogs are true food allergies. In fact, often, itchiness, redness, or paw licking is due to environmental triggers, not the food. Thus, it's crucial to avoid making hasty decisions and altering your pet's diet without considering environmental allergens. Here are common household triggers for allergic flare-ups in dogs (and cats)—plus steps you can take to minimise exposure.

Dust Mites
Dust mites are microscopic creatures that thrive in bedding, carpets, upholstery, and even your pet’s bed. They feed on skin flakes and are one of the most common allergens for both humans and pets.
How to identify the issue:
Pets allergic to dust mites may exhibit year-round symptoms such as excessive licking (especially of the paws), constant scratching, red skin, recurrent ear infections, or hot spots. Symptoms are often worse indoors or in the morning after sleeping.
What you can do:
- Wash pet bedding weekly in hot water (at least 60°C). Use a pet-safe fabric detergent like the Big Borky Pet Safe Fabric Detergent, formulated to break down pet stains, dander and odours, reducing the risk of pet allergies.
- Vacuum regularly with a HEPA filter vacuum.
- Minimise clutter and carpets where dust mites love to hide.
- Consider using an air purifier with HEPA filtration in the rooms where your pet spends the most time.
Household Cleaning Products
Many cleaning agents, including floor cleaners, air fresheners, detergents, and sprays, contain chemicals and artificial fragrances that can irritate your pet’s skin, paws, and respiratory tract.
How to identify the issue:
Watch for sudden flare-ups after you’ve cleaned the floors or changed laundry detergent. You might notice paw licking, sneezing, watery eyes, or red rashes, especially on the belly or paws.
What you can do:
- Switch to pet-safe, fragrance-free, or natural cleaning products. We like the Big Borky Lavender Scented Pawsafe Floor Cleaner. This is an alcohol-free formula that is gentle on the environment and safe for both pets and humans with sensitive skin. This cleaner can be used on all surface types – hardwood, marble, tile, fabric, floor, mats, plastic, etc.
- Always let floors dry completely before allowing pets to walk on them.
- Rinse food and water bowls thoroughly if you wash them with dish soap.
- Avoid using aerosol sprays or air fresheners around your pet.

Mould and Mildew
Mould spores can grow in damp areas like bathrooms, basements, laundry rooms, and even inside HVAC systems. Just like us, our pets can inhale the spores or develop skin reactions after contact.
How to identify the issue:
Symptoms may mimic other allergies—itchy skin, ear infections, coughing, or irritated eyes. If symptoms worsen during rainy seasons or in certain parts of the house, mould may be to blame.
What you can do:
- Use a dehumidifier in damp areas to reduce mould growth.
- Clean the visible mould with a vinegar-based solution.
- Check for water leaks and repair them quickly.
- Keep your home well-ventilated, especially in bathrooms and laundry areas.
Pollen Brought Indoors
Even if your pet spends most of its time indoors, pollen from grasses, trees, and weeds can travel through your shoes, clothes, or even open windows and settle on floors or furniture.
How to identify the issue:
Pets with pollen allergies often suffer seasonally. You might see increased itching, especially around the face, belly, and paws, as well as sneezing or watery eyes.
What you can do:
- Wipe your pet’s paws and belly with pet wipes for sensitive skin or a damp cloth after outdoor walks.
- Bathe your pet with a gentle, hypoallergenic shampoo during high pollen seasons to soothe sensitive and allergy-prone skin.
- Keep windows closed on high pollen days and use air purifiers indoors.
- Wash your hands and change clothes after outdoor exposure, especially during peak pollen times.

Tobacco Smoke, Fumes and Indoor Scents
Secondhand smoke, scented candles, incense, and even fumes from cooking oils can irritate your pet’s respiratory system or trigger allergic skin reactions.
How to identify the issue:
Look for coughing, wheezing, watery eyes, or general discomfort, especially after exposure to smoke or strong scents. Pets may also avoid certain rooms where the air feels “heavier”.
What you can do:
- Avoid smoking indoors, especially near your pets.
- Use unscented candles or opt for beeswax-based versions.
- Ensure proper ventilation when cooking or diffusing scents.
- Place air purifiers in frequently used rooms.
Flea or Mite Infestation
Even a single flea bite can trigger an intense allergic reaction in sensitive pets. It’s called Flea Allergy Dermatitis, or FAD. Mites, like Cheyletiella or Sarcoptes, can also cause itching and irritation.
How to identify the issue:
Check for flea dirt (tiny black specks) or visible fleas, especially at the base of the tail or on the belly. Mites may cause intense scratching, dandruff-like flakes, or patchy fur loss.
What you can do:
- Maintain a regular flea prevention program year-round. Apply natural flea and tick repellent before going for walks. Try this TropiClean Natural Flea & Tick Spray for dogs and pet beddings. This product is made with a blend of powerful natural oils, including clove, lemongrass, cedarwood, and cinnamon. It is guaranteed to kill fleas and ticks by contact and repel them for up to two weeks.
- Wash bedding and vacuum floors weekly.
- Treat all pets in the household, even if only one shows symptoms.
- Consult your vet if you suspect mites—some require prescription treatments.

Steps to Help Identify and Manage Your Pet’s Allergy Triggers
Start with careful observation
Pay close attention to your pet’s behaviour and symptoms. Keep a daily log that includes what your pet eats, where they spend time, any new exposures, and when symptoms appear. Look for trends—do the signs of irritation occur only during certain times of the year or all year round? Do the signs appear shortly after you’ve mopped the floor? Your dogs can’t tell you what’s bothering them—but their skin and behaviour will give you clues.
Remove or reduce potential indoor allergens
Gradually eliminate suspected irritants in your home. This procedure could involve changing laundry detergents and household cleaners, replacing your pet’s bedding, or removing air fresheners around the house. Taking a systematic approach will help you uncover what’s truly affecting your pet.
Remember that regular cleaning matters to remove allergens but so does how and with what you clean. Chemical cleaners can leave residues that trigger allergies when in contact with your dog’s skin. And household air quality isn’t just a human issue—your pet breathes the same air you do. In fact, with their sensitive sense of smell, any strong smell may affect them more than it does us.
Consult your veterinarian
Bring your notes to a veterinary visit. A vet can help you pinpoint the likely culprits, offer relief through medications or medicated shampoos, treat any infections that have developed due to scratching or licking, and recommend or conduct allergy tests when needed.

KATHERINE KHOO
Katherine is a Pet Nutrition Specialist and GDP’s Pet Wellness Advisor. She is committed to helping pet owners make informed dietary and lifestyle choices in nurturing healthy pets. Katherine is also a practicing Nutritional Therapist (human nutrition) and has been helping hundreds of clients to heal naturally with nutrients.