If this was marketed as a general-purpose bathroom/kitchen cleaner, I would probably give it four or five stars. However it is a limescale remover, and as such I can't give it more than two stars. I've used about half the bottle on three taps and a WC, and it has made a minimal impression. Smells like will another well known cleaner and is about as effective (ie, not very), for 3 times the price. If you just want to remove very light limescale buildup, then this product is likely to be OK. If you trying to rejuvenate taps with perhaps months or years of buildup, this product is no good. Trigger sticks too.