hello, I'm a new cat owner. My cat, Kira, has really nasty bowel movements that could be classified as toxic waste. She goes and we instantly have to open some windows and clean her box. When we first got her we had her on a generic clumping litter and found that the urine smell was also very strong. Since then I have switched to half clumping and half silica crystals and find that the urine is much better. I clean her box all the time and she has no problem using it. My cousin and friends that have had cats for years have remarked that this is very unusual. I'm wondering if maybe it is her food? She is eating Nutro right now. PLEASE HELP US! THIS IS DISGUSTING!