Mine works fine when the fridge is left closed all day, I only have the problem with mjne on very hot days when the door is opened frequently (3 kids, 2 adults). That is when I think the ice block could help. I like my beer ice cold, too! I almost always place one in the freezer for about 20 minutes before opening. I plan to cut vents into the OK door for ventilation while not camping. The fridge stays cold, but the OK gets very hot when closed up. I cannot go through the roof as there is a bunk above. I can go through the floor, the door, and the rear wall. I have a 4" hole saw and I could use some vents from Lowes or home depot with silicone adhesive. Maybe add a small computer fan to force air through if needed.
