Rejecting Partial Payment California

[Kevin Breslin]

In California if after 3 day notice a tenant makes a partial payment by money order in my mail box can I return the money order without re-issuing a 3 day notice?

What is the best way to return the money order? Registered mail? Place it in their mail box? This hasn't happened yet but what if they become scarce and I can't just hand it back?

Can I require that they pay me directly at my house between 4:30 and 7:00 or some other limited hours since I'm not home during the day? Then I can reject the payment immediately.