Acticoat Moisture Control Foam Dressing by Smith & Nephew ( DRESSING, FOAM, ACTICOAT, MOISTURE CTRL, 4X4 ) 10 Each / box. Acticoat antimicrobial barrier dressings work in a number of different ways Bacterial reduction - Smith and Nephew's Acticoat dressings with SILCRYST nanocrystals have demonstrated a broad antimicrobial spectrum and kill rate in in vitro studies, inhibiting a wide range of pathogens, including drug-resistant bacteria such as methicillin-resistant Staphylococcus aureus MRSA and vancomycin resistant enteroccocus VRE. Fluid management - Chronic wounds can have a variety of exudate levels from low to very high.