Greetings from a cattery owner - four adults, and usually 1-2 litters of 6-8 at any given time. My day job is running a vacation rental cleaning company, so, cleaning is kinda my life.

1. You need an air purifier that's rated for the square footage. I swear by my Hunter HP800 units - rated for 550 sq. ft., and I have 2 in a 750 sq. ft. apartment.

2. You need a vacuum that can keep up with the pets. I swear by my Sebo - HEPA filtration, plus everything is bagged, so no dust/dander is released when you throw out what the vacuum picked up.

3. Steam mops work wonders for hard surfaces!!

Good luck!!