Abstract: A sprayer configured to spray a chemical in a wet mode or a dry mode includes a tank adapted to store the chemical, and a sprayer head removably coupled to the tank. The sprayer head includes a cap portion arranged to cover an opening of the tank, a channel arranged above the cap portion and configured to facilitate a flow of motive fluid therethrough, a nozzle arranged inside the channel, and a dial arranged between the channel and the cap portion. The dial is configured to rotate relative to the cap portion and the channel, and includes a plurality of first orifices, a second orifice, and a slot. The first orifices enable chemical flow from the tank to the channel in wet mode. The second orifice allows motive fluid passage into the tank in dry mode. The slot enables air entry through the cap portion in wet mode.