Various deterrent protocols may be defined and implemented for lights and/or speakers located at a property. For example, in response to a detected security event, e.g., detected motion on or near the property, a first action defined by a deterrent protocol may be instigated by a security system. The first action may be, for example, activating one or more light emitters in a steady state mode, e.g., a continuous on mode, or a non-steady state mode, e.g., a flashing pattern. If after a predetermined amount of time, the security event is still detected, based upon the deterrent protocol, a second action may be instigated. The second action may include changing the mode of the light emitted by the one or more light emitters. In embodiments, the first or second action may include activating a speaker to emit audio.