"Amazing" star star star star star Have used the liquid form before with OK results. This really does the job as others have mentioned. The water now runs away like it has brand new pipework. Why can't it be purchased online at present, and only in store( currently you are closed due to covid restrictions)? Also from a previous customers comments, how about multipacks of 5 or 10??? Mrs Haimes - 19 February 2021 support_agent A note from the team Thank you for your review. We're delighted you find these work so well for you! - We've passed your suggestion along to our Buyers.