What Makes Cat Dander a Problem?
Cat dander is a carrier mechanism for cat allergens, which is bad enough. But there are several additional aspects to be considered.
First, even one cat produces enough dander to be a plentiful food source for dust mites. Dust mites serve as a secondary source of allergens through their droppings and their dead, dried up carcasses. Not only should the impact of cat allergens and dander be considered, but also the effects of increased dust mites.
If you’ve ever noticed dust in a shaft of sunlight the particles you were seeing were typically in the 50-micron size. Under ideal conditions the unaided human eye might be able to see particles as small as 10 microns.
Approximately 75% of cat dander particles are 5 to 10 microns and 25% are 2.5 microns or smaller. Particles that size do not readily settle out of the air. They are