It may surprise you, but ticks are more active in fall than in summer.
Dr. Thomas Mather explains that ticks mature in the fall, come out after the first frost, and can still be active into winter.
Dr. Mather suggests daily tick checks and to wear clothing treated with permethrin instead of deet. If you do find a tick, remove it as soon as possible - ideally within 24 hours. When you do remove the tick, do not squeeze the body, but grasp close to the skin with a pair of tweezers and remove the tick completely.