Heater Cover

For all those who have campers, do you see the metal cover over the water heater? Well, they are very important, they keep bees from building hives inside your water heater. I didn't have one but now I do. Guess what happens if you light the water heater and there is a bee hive in there, you're right, it catches on fire. Now I'm not saying ours caught on fire but I now have a heater cover on my trailer :)