The study purpose is to treat CRS with an alternative to antibiotics, thus sparing volunteers from prolonged antibiotics use and its possible side effects, not to mention the cost and growth of resistant bacteria. We believe that by combining ICG with light or even by light alone we can produce you a beneficial effect. Although this has been shown to kill bacteria in lab or animal studies it is still investigational for humans. The study will have two arms: ICG + laser and laser only arm. ICG will be applied locally in the nasal passage (internally) followed by laser activation with a power setting of 6W. The laser will be activated with a diffuser mode meaning light of a specific known wavelength will be delivered evenly in the nasal cavity and not as a beam. Laser only treatment plan will be the same only without ICG. Volunteers will be assigned to one of the groups randomly meaning you have a 50% chance of enrolling to each treatment group. Volunteers will not know to which group. Weekly visits with a total of three visits will follow. With each visit Volunteers will receive additional treatment as the initial treatment was and a nasal culture will be taken. Volunteers will have to fill a questionnaire with each visit.