Should the tenant be billed for full carpet replacement?

[Bret Kingcade]

Full disclosure: I am the tenant in this situation. I just started house hacking and this is from my apartment lease that just ended.

So in the 2 years I lived at my old apartment, my dog had probably 6 accidents (urine or vomit). Each time, I cleaned it up immediately with Resolve. There were no visible stains or odors (my girlfriend who didn't live there agrees) but when they did their walkthrough, they found these areas by shining a blacklight over them. They decided to replace the carpet for the entire apartment and send me the bill instead of just using a carpet cleaning service. Basically my question is just whether or not this is typical and consistent with what you guys would do in this situation. If so, I will obviously pay for it since it is my fault but I wanted to make sure first that they were not going overboard before I pay over $1,000 for it. If this is unusual, is there anything I can do about it? Thanks for any input!