Sneaking in an extra pet

[Amanda Thompson]

I have brand new tenants who apparently snuck in an extra cat. I was clear when we met that we have a 2 pet maximum. It's also stated more than once in the lease, and they have a pet addendum. My maintenance guy told me he saw 2 cats and a dog.

My fault: I didn't add a fine or fee for violating this specific rule. I guess it just falls under violating the lease... which means termination of lease. That seems excessive for a cat... but they did break the rules. Like, right away.

What are my options? I know I should follow the lease but can I do something else? I was thinking about telling them they either get rid of a pet or pay $50/mo for it. Our current pet rent is $50/mo for dogs and $25/mo for cats.