A spray control apparatus for aerosol cans, comprising: a dispersion nozzle; a conduit configured to couple a fluid and propellant contained within a spray container to said dispersion nozzle; a can coupling cap having an outer perimeter and an interior surface defining an interior space, a base, a sidewall rising from said base, a top lip distal to said base, and a can engaging ring adjacent to said base, said can coupling cap configured to couple rigidly to said spray container; said top lip comprising a locking ledge having a bearing surface facing away from said can engaging ring, a cam track having a bearing surface facing toward said can engaging ring, and a guide slot therebetween; and an actuator affixed to said conduit and dispersion nozzle and located concentrically within said can coupling cap sidewall, said actuator having a generally cylindrical body and at least one cam protruding radially from said generally cylindrical body into said top lip; said at least one cam engaging said locking ledge bearing surface when said actuator is in a first rotary position relative to said can coupling cap and thereby blocked from axial movement toward said can engaging ring, engaging said cam track bearing surface when in a second rotary position relative to said can coupling cap and thereby driven toward said can engaging ring, and passing though said guide slot when rotated between said first and second rotary positions, the spray control apparatus being characterized in that said at least one cam can move closer to said can engaging ring when in said second rotary position, said actuator thereby configured to control a spray container valve to adjust flow of said fluid and propellant out from said spray container. a dispersion nozzle; a conduit configured to couple a fluid and propellant contained within a spray container to said dispersion nozzle; a can coupling cap having an outer perimeter and an interior surface defining an interior space, a base, a sidewall rising from said base, a top lip distal to said base, and a can engaging ring adjacent to said base, said can coupling cap configured to couple rigidly to said spray container; said top lip comprising a locking ledge having a bearing surface facing away from said can engaging ring, a cam track having a bearing surface facing toward said can engaging ring, and a guide slot therebetween; and an actuator affixed to said conduit and dispersion nozzle and located concentrically within said can coupling cap sidewall, said actuator having a generally cylindrical body and at least one cam protruding radially from said generally cylindrical body into said top lip; said at least one cam engaging said locking ledge bearing surface when said actuator is in a first rotary position relative to said can coupling cap and thereby blocked from axial movement toward said can engaging ring, engaging said cam track bearing surface when in a second rotary position relative to said can coupling cap and thereby driven toward said can engaging ring, and passing though said guide slot when rotated between said first and second rotary positions, the spray control apparatus being characterized in that said at least one cam can move closer to said can engaging ring when in said second rotary position, said actuator thereby configured to control a spray container valve to adjust flow of said fluid and propellant out from said spray container.