A sprayer for attachment to a hose, the sprayer including an inlet for introducing fluid into the sprayer, an outlet for discharging fluid from the sprayer, a first controller to control the flow of fluid from the inlet to the outlet, a first fluid path located between the first controller and the outlet, a second fluid path located between the first controller and the outlet, the second fluid path fluidly connectable to a container having an active liquid, and a second controller to control the flow of fluid in the second fluid path, wherein in use, when fluid is flowing in the second fluid path, the fluid flow causes the active liquid to enter the second fluid path and exit the sprayer via the outlet.
