Not very effective on limescale and I found I had to use half the bottle for one clean of the bathroom.
I used this on our shower cubicle. I was so impressed with its cleaning power I was not expecting it to be as good as it was. Dissolving the tablet properly took quite a long time so I would probably leave it over night and give it a lot of shakes but it was well worth the wait. I will definitely be trying their other products.
When I first used this I was skeptical as there is no foam , it looks like you are spraying water HOWEVER my shower screen has never been so clean and when you rinse the pad you can see the dirt
I use in the sink , shower , bath and even to scrub the loo
One clean bathroom and I have already bought more