Hi Sarah, to answer your question, Cinnaminson Township (as all other towns in Burlington County) participate in a shared services agreement with Burlington County where they pick up recyclables free of charge. They determine what types of plastics (and paper) they accept. Here is a link to their website if you would like to follow up with them. http://www.co.burlington.nj.us/pages/viewdepartment.aspx?did=58
Feel free to email me at avmrph@comcast.net if you have any other questions or concerns