In terms of continued composting, the researchers evaluated the models afterward for 5 days. None of the 27 participants interviewed about whether they perceived they were being observed, believed they were. (Sussman, Greeno, Gifford and Scannel) Instead, the percentage of ideal composting did not decline, rather it reached a plateau. This may not be a long term evaluation, but shows some prolonged manipulation in behaviour. Participants were split into four categories; noncomposters, partial composters, "unusual item" noncomposters and ideal composters. Unusual items are classified as items one could not compost traditionally at home but can when an industrial composter is used, such as chopsticks or napkins. (Sussman, Greeno, Gifford and Scannel)​
For the signs they replaced the waste station two days prior to the experiment and implemented a compost bin with a standard informational sign (listing acceptable and unacceptable compost items). Soon thereafter they replaced the sign on the compost bin with an improved one, and added a table top sign as well. The cards were laminated, folded and began their messages with "Please Compost Your Leftovers". They also included region specific garbage facts, popular cafeteria specific food carton and box images, and also why composting is important to the environment.  Portions of these additions to font, design and region specificity were extracted from a session of recommendations for changes that 12 various psychology students had. This manipulation in signage to a more effective visual prompt showed an increased behaviour change. Supporting the hypotheses that the percentage of cafeteria patrons who composted their food waste will significantly increase from a baseline condition following the introduction of informative signs. (Sussman, Greeno, Gifford and Scannel)