Automatic lease renewal - College students

[Steve L]

I rent out a house in NJ to college students(6). They sign a yearly lease (June 1st - May 31st) with no automatic renewal. i usually ask the tenants in the beginning of November if they wish to renew for another year, otherwise i will start advertising.  For college rentals, it is best to start advertising as soon as possible. if they want to renew, i have them sign a lease renewal form.  My Question is, my daughter is currently in college in PA and her lease says "upon expiration, this agreement shall become a year to year agreement automatically, unless tenant notifies owner in writing at least 130 days in advance to expiration that they do not want this agreement to continue". Do i want to add something like this into my lease or should i just stick to asking  them in advance.  Also how many days in advance should i do.