Call it merch. Call it maintenance. Call it the most Hank Hill thing to happen to home improvement since a man developed moral convictions about lawn striping. At long last, Hank Hill has achieved what every lawn-loving, garage-dwelling American icon dreams of: his own limited-edition can of WD-40. WD-40 is teaming up with King of the Hill for a collectible version of its classic multi-use product, available exclusively at The Home Depotfrom June 1 through August 31, while supplies last.