An animal and attacker deterrent system to be mounted to a bicycle or equivalent vehicle is disclosed herein. The deterrent system in one form included: a gas cylinder； a valve coupled to the gas cylinder and mounted to the bicycle； a gas conduit having a first end coupled to the user actuated valve； and at least one fluid reservoir coupled to a second end of the gas conduit； a plurality of mist producing spray apertures fluidly coupled to at least one of the fluid reservoir(s). The system as disclosed may include a plurality of reservoirs mounted to each of the left and right front fork components of the bicycle and having spray apertures mounted thereto. Alternatively, the system may include a plurality of spray apertures mounted at a single position and directed to mist fluid to left and right sides of the bicycle therefrom.
