I used the Naturalicious Moroccan Rhassoul 5-in-1 Clay Treatment earlier this year. It didn't get my hair and scalp clean. I had to cut the bottle open to get the last 3-4 oz out because it wouldn't come out when I squeezed and shook the bottle, so I think it should be packaged in a jar.
Hopefully you'll have a better experience if you decide to try it.
Sarenzo Clay Wash did a great job getting my hair & scalp clean though. Not the Sarenzo Peppermint & Tea Tree Clay Wash. A plain Clay Wash that I don't know of they still sell.