You pour undiluted chemical into the
tank. The siphoning action will mix the
chemical with the water and it will be
about a 10 (water) to 1(chemical)
mixture out of the hose. NOTE. The
chemical will only be siphoned out
when using the lowest pressure tip or
wand setting, not on high power like
a car wash. After use put water only
in the tank and let it siphon out so
the chemical pickup will not be destroyed.
Especially if you use bleach in the tank.