The 3-day notice can be served as soon as the rent is
past due.In other words wait until the
tenant is late with the rent.If you
have a written lease, you should consult with your lease to determine when he
rent is due.For instance if your lease
states that the rent is due on or before the first of the month and a late fee
is charged after the fifth of the month, you do not necessarily need to wait
until the fifth and can serve a 3-day notice on the second as the rent was due
on the first.