Although the condiments are a nice complement to the sandwich, the hot dog itself does not require treatment to mask excessive salt or improve on the flavor.
The Costco hot dog has one more element that helps it top all other hot dogs in America. The bun is exactly right. The bread is soft and tasty, yet the condiments do not soak into the bun and create a soggy mess.
The bun completes the Costco hot dog and makes it easily rank as the best in America.