I thought you could still get it in the winter. Not sure. Regardless, Benadryl might help the itch. My Lacey has taken it as well as my RB Mandy. They took 3 pills throughout the day and weighed 70 and 90 lbs. I hate to tell you to give him something but if he's miserable itchy,maybe it would help. Maybe someone else will come on and offer some advice.