A dispensing device for attaching to a container that has a valve stem, the dispensing device comprising: (a) a hollow tube having opposing entrance and exit ends, a wall extending between the entrance and exit ends that defines a flow channel through the hollow tube and that separates inside the hollow tube from outside the hollow tube with the inside being within the wall of the hollow tube, and a connector on the entrance end for attaching to the valve stem of the container; (b) a sleeve extending over a portion of the outside of the hollow tube and capable of sliding over the hollow tube, the sleeve extending over the exit end of the hollow tube and having a lower end and an opposing dispensing end, with the dispending end is proximate to the exit end of the hollow tube; (c) a sealing gasket around the outside of the hollow tube between wall of the hollow tube and the sleeve that prevents fluid communication outside of the hollow tube between the sleeve and the hollow tube across the sealing gasket, the sealing gasket is located between the exit and entrance ends of the hollow tube; (d) a trigger mount that is part of or that rigidly attaches to the hollow tube; (e) a trigger hingedly connects to the trigger mount in a first location with a sleeve portion of the trigger extending towards the sleeve from the first location and a trigger extension portion extending on the opposing side of the first location from the sleeve portion, where the sleeve portion operatively engages with the sleeve at a second location in a manner that causes the sleeve portion to slide the sleeve towards the exit end of the hollow tube when the trigger extension portion is displaced relative to the trigger mount in a direction away from the exit end of the hollow tube when the sleeve is in the closed position; (f) an elastic element that provides a restorative force to the trigger to replace the sleeve in the closed position when the trigger extension portion is displaced away from the exit end of the hollow tube thereby placing the sleeve into the open position; and wherein the dispensing end of the sleeve has a protrusion extending into the sleeve and aligned and of sufficient size so as to seal the exit end of the hollow tube when the sleeve is in a closed position and that is offset from the hollow tube so as to unseal the exit end of the hollow tube when in an open position, the dispensing end of the sleeve further having one or more than one opening that allows fluid to flow from the hollow tube flow channel through the exit end and out from the sleeve's dispensing end when the sleeve is in the open position. (a) a hollow tube having opposing entrance and exit ends, a wall extending between the entrance and exit ends that defines a flow channel through the hollow tube and that separates inside the hollow tube from outside the hollow tube with the inside being within the wall of the hollow tube, and a connector on the entrance end for attaching to the valve stem of the container; (b) a sleeve extending over a portion of the outside of the hollow tube and capable of sliding over the hollow tube, the sleeve extending over the exit end of the hollow tube and having a lower end and an opposing dispensing end, with the dispending end is proximate to the exit end of the hollow tube; (c) a sealing gasket around the outside of the hollow tube between wall of the hollow tube and the sleeve that prevents fluid communication outside of the hollow tube between the sleeve and the hollow tube across the sealing gasket, the sealing gasket is located between the exit and entrance ends of the hollow tube; (d) a trigger mount that is part of or that rigidly attaches to the hollow tube; (e) a trigger hingedly connects to the trigger mount in a first location with a sleeve portion of the trigger extending towards the sleeve from the first location and a trigger extension portion extending on the opposing side of the first location from the sleeve portion, where the sleeve portion operatively engages with the sleeve at a second location in a manner that causes the sleeve portion to slide the sleeve towards the exit end of the hollow tube when the trigger extension portion is displaced relative to the trigger mount in a direction away from the exit end of the hollow tube when the sleeve is in the closed position; (f) an elastic element that provides a restorative force to the trigger to replace the sleeve in the closed position when the trigger extension portion is displaced away from the exit end of the hollow tube thereby placing the sleeve into the open position; and