If you let the smell escalate to the point it stink of ammonia and no ventilation then yea. My friends that come over never know i had rodents in house till i told them... And they had to see it to believe me..
I've never tried the pellets I might have to. When I was producing about 150 rats and 60 asfs a month I had to clean every three days cause if I didn't the smell was unbearable. I'm also in a much hotter climate down here.