Why do Arctic Spas have a sealed cabinet?

I just received this picture today from a customer who is looking to purchase a new spa. It is a picture of their current spa that they want to replace. It raises a great reason on why Arctic Spas have a sealed cabinet. This means there are no openings in the cabinet. If you look in the top left of the picture, you will see the can of Wasp killer. We can bring up the advantages of the fiberglass ForeverFloor not allowing any rotting such as this picture has, we can bring up that with the Cedar cabinet or the Forever Flex cabinets of the Arctic Spas will never fall apart like this, and more but the real reason we have a sealed cabinet is WASPS! Need I say more.