It seems to appear from nowhere, but once it starts, limescale quickly builds up and is stubborn to remove. Scale-covered taps and showerheads look dirty and restrict the flow of water, but traditional surface limescale removers are not always effective at removing it, as they simply run off.

To help you make short work of tough jobs around the home, Oust is giving one lucky reader the chance to win £150 of Tesco vouchers and a pack of Oust Tap & Showerhead Descaler and two runner up prizes of £75 of Tesco vouchers each.

Oust Tap & Showerhead Descaler is specially formulated to make short work of limescale on hard-to-treat areas like taps and showers. Designed with an applicator brush which applies gel to hard to reach areas, the thick gel clings to limescale and gently removes it, leaving taps and showerheads as good as new. Simply apply straight from the tube through the applicator brush, wait 10 minutes, and then rinse away.

Find out more at www.oustdescalers.co.uk

HOW TO WIN!

To be in with a chance of winning, simply watch the video below and email us (click here) your answer, together with your name, address and daytime contact telephone number (please mark Oust Competition in your subject line). Alternatively, you can post your entries to Oust Competition, Newspaper Promotions, 23a Hardshaw Street, St Helens, WA10 1RT. Closing date is August 5, 2012. Usual Newsquest rules apply click here for full list.

Question: What percentage of households in England and Wales are served by hard water?

a) 50

b) 60

c) 70

email us (click here)

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The editor's decision is final and no correspondence will be entered into. Employees of Newsquest Northwest, their families and anyone connected with this competition are not eligible to enter. Winners will be notified by email wherever possible and Newsquest Northwest takes no responsibility for unread emails which leads to prizes being untaken. In the unlikely event that a prize event is cancelled, no further prize will be given and there will be no cash alternative. Oust may wish to contact you with further information, which may be of interest to you. Should you not wish to receive such information, please mark NO DATA on your entry.