Which detergent got the Bradys' clothes cleaner?

Safe (the new and improved Safe) :p

Bobby preferred Safe in the episode "Law and Disorder". In fact, he used an entire box.

oh I see what your saying now. In the ep. "the Hair Brained Scheme" there's a box of Safe on the washing machine so I guess Safe did the job best.

But apparently, it wasn't good enough to wash that orange out of Greg's hair. Paging Skip Farnum...

Of course, the whole thing went like this...

They used to use "Clear and Bright" until it turned their wash water Dim and Dark.

Then they switched to "Help", but they found out that "Help" didn't help!

Then they switched to "Champ... the Dirt Fighter!", until "Champ" couldn't take on the Brady dirt and lost the title.

Then they switched to "Best" because "Best" was best. (and Carol admits they used "Safe" between "Champ" and "Best")