In sunny and hot July I spent most of time working on microbiological experiments of my beloved PEMs. Of course the main idea is to prevent bacteria's settlement at the materials surface but how to obtain such effect??? At first it is necessary to check if adhesion occurs at all. I have already done it and now I can indicate which films are the most promising for future research. In the next step adhesion kinetics will be assessed, so the microb’s story has just begun…