You can't charge extra pet rent or even a pet deposit because it's legally not considered a pet.

I have a separate interest bearing account for security deposits as required by my state laws.

Hey @Thanh Lu, we don't do much direct bookings but we do have a $500 security deposit.

Quote from @Phillip Austin: There are two alternatives to a security deposit, which I speak about in my book.

WOW.. 40k plus deposits on a home to be built.. ??? 

The law does NOT apply to landlords:With less then 5 rental unitsThat live in one unit of a duplex and rent out the other unitThat rent out rooms in the home they occupySo, landlords can no longer state in their rental ads, "Section 8 not accepted".The reverse is also true, "Section 8 only", cannot be used.We've always recommended screening S8 tenants the same way as cash-paying tenants.Landlords waiving application fees and/or security deposits only for S8 prospects may also be violating Fair Housing.

You’re not using a PM, AND you’re assuming you can charge a service animal a deposit and pet rent?

PM's will keep all late fees, they hold the security deposits so they collect all the interest on security deposits. 

If you really want to get rid of them, sweeten the pot by offering to return their deposit after you verify the unit is empty with no damages. 

  $2500 deposit is put down.