@Quincy Nope, don't allow pets. I've had dogs of my own most of my life, but like Linda, I find that most dog owners do not train their pets, allow them to sleep on the bed (Airbnb encourages this- their Pet Friendly heading on the home page is a photo of a dog on a white duvet- who thought that was a good idea?), and the furniture, think a dog using a "pee pad" is the same thing as housetrained, and other unacceptable behaviors.
As I understand the new pet fee rules, it wouldn't encourage me to accept pets at all. As I understand it, instead of the pet fee being a fee for the booking, it will be applied on a per day basis.
So if the host charges a $30 pet fee, and a guest should book 6 days, but decide to shorten their stay after arrival to 2 days, the host would only get $10 of the pet fee, even though it could very likely take just as long to clean up after a dog has been there for 2 days as it would after 6 days.
Also Airbnb will now add service fees to the pet fee, which means both guests and hosts will be paying higher service fees. Which, pardon my cynicism, is why I think Airbnb has decided to add the pet fee, not because hosts have been asking for one for years.
So Airbnb has instituted the new feature in a way that is not really an improvement for hosts, as far as I can see.