Raising Rents

[Daniel H.]

What is the best way to raise rent on a tenant with a month to month rental agreement? I was thinking make sure I get current month's rent on the first, then deliver notice that rent will be raised one month from then if that is enough time. If they are not out by first of next month and don't pay the new rent, start eviction.

Should I get them to send back a signed new rental agreement?
Should I have a constable deliver the notice so that I have record they received it?
Any other tips?