In the previous photo, I've smeared some grease on one of the plastic containers I used so you can see how effective GreaseMaster is in this application. I sprayed it on the grease and started wiping. After the first round, it had removed most of the bearing grease (wiping away the excess globs), but it was the second and subsequent passes that removed the film and cleaned the deposits from the porous surface of the plastic that blew me away. It did so without so much as roughing the surface of the plastic. It didn't even make it soft. In fact, it didn't bother it at all. Once rinsed with water, the GreaseMaster and remaining grease residue quickly rinsed away to leave a perfectly, squeaky clean container. Click image to enlarge.