How to Stop Cats from Bringing Outdoor Allergens Home (Vet Approved Methods)

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When we let our cats outside in the spring months, they will take the opportunity to explore all the new blooms and sprouts. So, especially when pollen levels are high and allergens are up, even your cat can drag in those pesky triggers and cause all sorts of sniffles and sneezes.

If you have a cat that is an outdoor explorer, there are measures you can take to reduce transmission. Suffering from allergies is no fun, but you can make it easier during warmer months. Here are a few ideas.


What Are Allergies?

An allergy is where your body reacts to something that should normally be harmless, like pollen in the case of seasonal allergies. If you suffer, you are already well-aware how miserable it can be.

woman sneezing into tissue because of allergy to cats
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What Can the Cat Drag In?

Cats have fur that can trap debris and allergens and then spread them around your home so your indoor/outdoor companion can unfortunately bring in some problems.


Pollen is the primary cause of seasonal allergies. The immune system mistakes microscopic pollen grains as an intruder. Pollen enters through the mucous membranes and affects the system. At certain times of year it is hard to avoid this allergen completely but you can take steps to reduce the amount that you are exposed to.


Mold allergies are triggered by a sensitive immune system response. Mold spores go airborne and enter your body when you inhale. The body treats these spores as foreign invaders and creates antibodies to fight them, resulting in allergies. Mold grows in moist , damp environments and can be found outdoors and indoors.

woman with cat allergy
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Dust Mites

Dust mites are tiny bugs that commonly live in house dust. They can cause year-round allergies and are a primary cause of asthma. These mites don’t necessarily come from outdoors, but they can live on enclosed porches and other hideaway spots in the home. If your cat gets under furniture and stirs up dusty air, it can trigger these allergens.


Even though fleas are a parasite, cats may bring them inside during the warm months. If you are bitten by fleas, some people can have a worse allergic reaction than others. This can cause redness, swelling, itching, and irritation.

Regularly treating your cat regularly with a flea preventative will take care of this issue. Speak to your vet about the best option for your cat.

close up fleas on cat
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The 5 Ways to Help Keep Allergens Out

If you are allergic it can be impossible to avoid the things you are allergic to completely, but reducing the amount of allergens you are exposed to can really help. Your outdoor traveler’s hair can act as a carrier of airborne allergens and spread them around your home , here are some ways you can try and reduce this.

1. Wipe Your Cat Down

Buy a pack of unscented wipes or dampen a cloth. Wipe your cat down, paws and all, before you allow them to come inside from an outdoor adventure. This will strip the existing allergens on the coat to reduce transmission.

You can buy species-specific wipes on sites like Chewy. These products are explicitly designed for cats, using gentle, pH-balanced formulas.

woman using cleaning wipes on pet cat
Image Credit: NONGASIMO, Shutterstock

2. Vacuum Regularly

Not like you don’t clean enough anyway, but vacuuming regularly can get rid of the pollen, dust, and dander, too. It can also do a wonder for dust mites in the home. Use a vacuum cleaner with a HEPA filter.

Don’t forget to dust, either. When dust collects in areas that can be stirred up, it can cause allergens to go airborne. So, get all the nooks and crannies.

Using an air purifier may also help reduce the number of allergens indoors.

3. Brush Daily

Brush your cat regularly outside if possible and away from carpet and soft furnishings. A couple of swipes of the brush can get rid of allergens, dander, and debris. If you keep your cat’s coat clean and combed, it will weed out a lot of potential irritants. Ideally this should be done by a nonallergic person but if this is not possible wear a mask when grooming.

Slicker brushes get to the skin comfortably while efficiently removing coat impurities. You can also use other brush styles, like deshedding tools and bristle brushes.

Pet hair brush with pet fur clump after grooming cat
Image Credit: RJ22, Shutterstock

4. Wash Your Cats’ Bedding

Wash your cat’s bed, blankets, favorite pillow, or anything else they like to sleep on, regularly with a hot wash.

5. Keep Your Cat Out of the Bedroom

It might be worth considering preventing your cat from going into certain parts of the house so you can have ‘safe zones’ with fewer allergens around. Keeping them out of the bedroom can be particularly helpful. We all know cats like to snuggle onto our beds but avoiding this will reduce the number of allergens you are exposed to when you are trying to get a good night’s rest.

Ginger tabby cat hiding under the bed
Image Credit: Konstantin Aksenov, Shutterstock


Is It Your Cat You’re Allergic to?

If you seem to be getting the sniffles every time your cat is around, you might not have thought about this. Unfortunately we can have multiple allergies and our allergies can change over time.

If you are concerned you may have developed an allergy to your cat, speak to your doctor. Typically, they use a method called the skin-prick test to diagnose cat allergy. Your doctor will take a sterile probe and prick a small portion of your skin, injecting a liquid. You will be monitored and if you develop redness or swelling, an allergy is to blame.

Signs of cat allergies can vary from mild to severe and include:

  • Sneezing
  • Runny, stuffy nose
  • Nasal congestion
  • Facial pain
  • Coughing
  • Tightness in chest
  • Wheezing
  • Shortness of breath
  • Watery, red eyes
  • Rashes
  • Hives

If you have a cat allergy, you will have to work out a new arrangement. You may have to make some lifestyle changes and take medication, but coexisting with allergies to a cat is possible in many cases. There are now specific cat foods that neutralize and reduce levels of Fel d 1, the major component in cat allergy. This food does not cure cat allergy and the cat needs to be continuously fed with it to be effective. It only works for the cat that is having the specific food and it doesn’t mean that you won’t react to other cats.

Cat sneeze
Image Credit: Sergio Huainigg, Pixabay



Keeping your cat from bringing in allergens might not be easy, but there are measures you can put in place to reduce the effects. Pollen season can be particularly difficult for many allergy sufferers, so any way to alleviate some of it is an upside. If you think you may be developing an allergy to felines, speak to your doctor about further testing.

Featured Image Credit: Daykiney, Shutterstock

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