There are many types of air purifiers for pets, but some of the most popular are the electronic air purifiers. These purifiers use electronic filters to remove pollutants from the air, and they are often more affordable than other types of air purifiers. Another popular type of pet air purifier is the activated carbon filter. This type of filter removes toxins and other pollutants from the air, and it is often more effective than electronic air purifiers. Finally, some pet owners choose to use activated carbon filters combined with a humidifier to improve air quality for their pets. This type of air purifier helps to improve the humidity levels in the air, and it can also help to remove pollutants from the air.