It's the protein, not the fur
The main source of cat allergy is a protein called Fel d 1. It is produced in the cat's skin and salivary glands. As the cat grooms itself, the protein transfers to its fur; as the fur sheds, it is carried all over the house, onto the sofa, the carpet and the bed.
That's why a 'non-shedding cat' doesn't solve the allergy by itself. What causes the symptoms is not the fur but the protein on it.
Even when the cat isn't in the room
Some of the particles carrying Fel d 1 are smaller than 5 micrometres. Particles this light can stay suspended in the air for hours and are carried elsewhere on clothing. Even if the cat never enters a room, someone with an allergy can still have symptoms there.
Enzymes break down the protein
Because Fel d 1 is a protein, enzymes that break down proteins can target it too. A protease called subtilisin, obtained from Bacillus species, has been shown in the laboratory to break down Fel d 1, and it has been patented for reducing cat allergen in the environment.
This is a laboratory finding, not a result measured in a home. Still, it explains why Bacillus probiotics are part of the allergen story.
What can you do at home?
You can live with a cat and still ease the allergy.
- 01Keep the cat out of the bedroom; the bed is where you spend the most time.
- 02Wash the cat's bed, blanket and sofa covers often.
- 03Apply a probiotic spray to the pet's bed and living area; don't spray it on the animal.
- 04If you have symptoms, consult an allergist.