Littel Pet Shop Pantings My 2 New Pet Rats?

My 2 new pet rats? - littel pet shop pantings

I have 2 new rat cage is bald and rather tall, slim, quiet, but
and tends to smell A LOT!
Purify I clean the shelves every day and every 2 days compleatly but they still smell
I use care fresh bedding at the base, and the paper as a bedding set pieces ...
I give to eat food from the common rat
Tooth doged and casual eating the last bit of yogurt in the bottom of the tub = p


no idea why I smell a rat it has?