knocking on door for rent... repeatidly?

[Katherine Rossell]

I have a problem tenant (I have talked about in a previous post). Can I knock on her door every day to ask for the rent payment? 

I have already given her a 60 day notice to vacate because her lease has ended. She got very upset and has not paid $200 of Septembers rent yet. If she does not pay rent for October I am going to give her a 14 day notice to pay rent or quite. However, in the mean time, I want to knock on her door everyday when I get out of work to ask her to pay the $200. Is this legal?