Both "Spring Cleaning" and the "Spelling Song" were featured on the 1998 compilation album Best of Nicktoons, which was later re released on vinyl in early 2010.
This episode was featured in an article of the Sun Herald. The headline was "Rocko and the Gang Take Down Pollution."
Murky the Bear is an obvious parody of Smokey the Bear, an popular mascot created to teach people the dangers of wild fires.
The songs were music and lyrics by Dan Povenmire and Jeff 'Swampy' Marsh, with the exception of "Ed's Song", which had lyrics by Martin Olson and uses the music of the APM track "Busy Bachelor".
Some of the rocks in the background during the desert scenes spell put words. One of them is JOE. This is the first name of the creator of the show, Joe Murray.