geoff
just a way of saying how fast it is, and how far it goes. personally, depending on circumstances, i'd prespray a house in 3 parts. with extraction in between each one.
john
hydraforce plugs into the solution hose from the trucky, then mixes with hot water from the trucky at the right dilution rate,
1 small 5 litre can of high concentrate prespray, could, if you wanted to, pre spray a whole 5 bed house and then some, with out refilling.
derek