About two weeks ago my dad was out back and noticed that one of the hives had a lot of broken down wax at the entrance. It has been cold so we haven’t inspected to determine what is happening. But from the looks of it, possibly robbing or pests been the issue here. I don’t see dead bees so it could be small hive beetle or wax moths doing the damage. Today it’s supposed to hit 70F for a short duration so we will open up this hive to take a closer look.