I purchased 3 pkg of the 1.3 cup containers yesterday and was excited they were clear and easy to see what is inside to store various nuts and seeds I purchase.  Today I was preparing to wash them and pulled the plastic off the top lid in each package and all of the adhesive material did not come off with the plastic.  I've spent a great deal of time trying to get it off with every natural cleaner I have.  It is at least smooth now however the area where the adhesive was is now a dull finish.  So since they are 2 to a package, half of the lids have a dull finish in the middle of the lid.  I have not yet used them, but look forward to having these rectangles rather than round storage containers, which will take up less space.  Since I have not used them, my ratings are based on my years of experience purchasing Rubbermaid products.