Start eviction as a routine business paperwork, like clockwork with lates. In my area this did not mean eviction would occur, the Tennant had two weeks to pay and no other penalties to them.
If they are late, and have had eviction notice started three times ( or less). Offer them full damage deposit back if they move out within the week. Incent them to get out fast, with a reason to leave everything in good shape, and you a chance to get a real tenant within the month. Eviction here is a longer process and deposits are rarely helpful in keeping you above water.
FYI I learned this all from experience, and tenant had lots of good one time reasons why they were late...