I agree, once the wait period for the rent has passed, we send a late notice along with the late charges as per the lease (we had our lawyer advise us with our first lease), and then we start the eviction process. We have let people be late and it never seems that they can get caught up.
Be careful about letting people do too much to your property since the security doesn't always cover the repairs and even if you win in court you win a judgement, collecting that is another story.

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Sometimes the elevator often the shaft