I have an indoor rabbit which its extreme sensitive to dust, I use no bedding in the cage and I have paper based litter pellets in his litter box. He stopped having trouble with his eyes but he still have sneezing seizures and have a runny nose. Ive been to a vet specialist veterinarian which many rabbit owners recommend in my countrys region. Both times he have been healthy and I got treatment for the eyes which helped. Will it help when he become an outdoor rabbit or will it get worse? I clean the apartment every week and clean his litter 3-4 times a week, I also let the window open when I clean. How can I help him with his sensitivity to dust.