SCENT LOK,I would'nt be in the woods hunting whitetails without it I have had deer directly underneath me and they never winded me or picked up my scent.but still you need to be clean as possible and keep your clothes in an air tight container including boots gloves,etc.and dress in the field to keep clean of all foreign objects,my hat or hood and my shooter gloves are SCENT LOK to and they are just as important to me as my suit is,this is my opinion from my sucsess of wearing a carbon activated suit with rubber boots.