FELIWAY diffusers release oily vapors that rise above the
diffuser in a column of warm air. If this air column is blocked (e.g. if the diffuser is under a shelf, table, or furniture) the oil may re-condense, leaving a visible stain. With this in mind, it is important to leave at least
4ft of clear space above the diffuser. DO NOT plug the diffuser under any furniture or object that protrudes from the wall.