Neighbours dumped a dresser in front of my mom's house

My mom saw two people from the house next door dump a dresser on her front yard. I assume it's getting damaged, sitting in the snow right now so I don't think anyone will take it for free, but maybe?

I am not at my mom's house right now but will be in the morning. If the dresser is still there I will knock on the door of the house and tell them they need to get rid of it.

If they refuse, or say it's not theirs, what recourse does my mom have? She can't afford to hire someone to take it to the dump (nor should she).