Some places charge more per month, some don't. Since I don't keep critters, I really don't know what they do here. I think they just found a way to exploit a loophole in the Landlord Tenant Act. My neighbor who went back to California the end of June had to pay $40 for carpet cleaning, half of what the mgr. said it costs them; she'd been here two years and lots of places don't (maybe legally can't) charge for carpet cleaning or repainting after three years. The carpets here need to be replaced anyhow.
Happiness is catching that dropped stitch while it's still fixable..