Simply leave them alone and do not obstruct. Any sprinkler activation anywhere in the building willnactivate the building evacuation alarm system; which will notify the Fire Department. Residents mustnnever hang anything from a sprinkler head or frame and use care not to break the glass bulb as this willncause an activation of the head releasing the water. Water in these pipes smells unpleasant and willndamage your unit quickly if broken. The sprinkler head or frame (white part) cannot have any paint ornany other coating or material on it or it will not operate. Keep tall furniture, lamps and plants away fromnsprinkler heads so they will work effectively in the event of a fire.