I gave my tenants 30 days notice & they are still there. What is my next step?

I am a landlord in Upstate NY and I gave my tenants 30 days notice to move because I need to move into the apartment. I drove by today and they had a window open upstairs. I stopped and told them since I pay the heat that I wanted the heat turned down and the window closed. It was hotter than hell in there. I noticed that there was nothing packed up and asked if they had found a place to go. They said no. There deadline is tonight at 12pm! What is my next step in evicting them? Also, I pay the heat and they are abusing it, can I keep their security deposit because if it?