HG Mould Spray - 500ml



In Stock

- Only 1 left online
Product code: 149363  | Model: 81399
Want it by tomorrow? Order within and select Next Day Delivery at checkout.
    Why buy from Robert Dyas?
  • Home Delivery to most of UK Mainland Delivered within 5 working days from £3.95
    Next working day: £4.95
    Named day: £4.95
    Saturday: £7.95
    Find out more
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This powerful formula effectively eliminates tough mould stains from silicone sealant, grout, plaster and more, so it's great for cleaning your bathroom or kitchen. It's easy to use – you just spray, leave and rinse. It makes filthy black stains disappear to make your home new again and you can see results within 30 minutes, making this an effortless task that you won’t dread to carry out.  

This anti-mould spray can also clean tile walls, seals in your swimming pool, garage, shed or conservatory. It has a bleaching effect so it’s good to test it first and you should use gloves too for your safety. You simply spray the surface from a distance of 3-5cm and leave it to do its magic for 30 minutes before cleaning with a sponge and water to make it brand new again. 


  • Volume: 500ml


We aim to deliver items that are currently in stock within five (5) working days (excluding Bank Holidays) after the date the order is placed.

Working days are defined as Monday-Friday 8am-7pm inclusive, excluding Saturday, Sunday and Public Holidays.

Please note that during particularly busy periods, it may take a little longer to receive your delivery and our carrier may attempt to deliver to you on a Saturday.


  Standard Next Day Named Day Saturday
Mainland UK (ex Isle of Wight) £3.95 £4.95 £4.95 £7.95
Highlands & Scottish Isles £11.95 N/A N/A N/A
Northern Ireland & Isles £11.95 N/A N/A N/A
Mainland UK (ex Isle of Wight):  
Standard: £3.95
Next Day: £4.95
Named Day: £4.95
Saturday: £7.95
Highlands & Scottish Isles:  
Standard: £11.95
Next Day: N/A
Named Day: N/A
Saturday: N/A
Northern Ireland & Isles:  
Standard: £11.95
Next Day: N/A
Named Day: N/A
Saturday: N/A

Next Day service will be available for orders placed on the website from Monday to Thursday before 3pm. Typical delivery time windows: Standard, Next Day, Named Day - 08:00 - 16:00

Our Saturday service is available for orders placed before Friday 3pm. Typical delivery time window: Saturday - 08:00 - 18:00


  Next Day Named Day Saturday
Mainland UK (ex Isle of Wight) £15.00 £15.00 £25.00
Mainland UK (ex Isle of Wight):  
Next Day: £15.00
Named Day: £15.00
Saturday: £25.00

Next Day service will be available for orders placed on the website from Monday to Thursday before 3pm. Typical delivery time windows: Next Day, Named Day - 08:00 - 18:00

Our Saturday service is available for orders placed before Friday 3pm. Typical delivery time window: Saturday - 08:00 - 18:00

Unfortunately, we currently cannot deliver bulky products to the following locations: Highlands & Scottish Isles, Isle of Man & Isles of Scilly, Northern Ireland, Isle of Wight


Some of the items sold on our website are delivered direct from our suppliers; this is clearly indicated on the relevant product page. Lead times for these items do vary from 5 working days up to 28 days. Please be aware that we can only arrange for delivery of these products to mainland UK addresses. Vendor direct products are delivered for FREE.


Returning an item couldn't be simpler with our 30 day money back guarantee:

Most of our products are covered by our 30 day no quibble money-back-guarantee as long as they are with their original packaging, unused and in a resaleable condition.

This promise exceeds your legal rights under the Consumer Contracts Regulations

Products not covered by our 30 day money-back-guarantee

  1. Large Kitchen Appliances (including washing machines, cookers, dishwashers, fridge freezers, hobs, cooker hoods and dryers)
  2. Outdoor Garden Furniture
  3. Indoor Furniture
  4. Products delivered direct from our approved suppliers (this is highlighted on the product detail page)

To return an item, you can either:

  1. Visit your nearest store with your receipt and we’ll give you a refund or exchange.
  2. Download a returns form or use the form on your delivery and returns note, enclosed with your goods. We recommend you obtain proof of posting when returning your items.
  3. Email or call our Customer Services team at [email protected] or 0800 707 6677 and they will provide you with returns instructions.

See our Delivery and Returns section for more information.

Ratings & Reviews


33 Reviews

4.9 / 5 Quality

4.8 / 5 Value

Rating snapshot
  • 5 / 5Quality

    5 / 5Value

    24 January 2019

    Really gets things clean again

    This really works. For really stubborn mould on silicon you might need to leave it on for a few hours, but it comes up like new after.

  • 4 / 5Quality

    3 / 5Value

    15 January 2019

    Works so quick!

    I bought this and used it straight away, it works so quick. Massive fan of it

  • 5 / 5Quality

    5 / 5Value

    08 November 2018

    A cleaning must have

    So easy to use, spray...leave for a while and wipe. No elbow grease required!!! I tried all sorts over the years that didn't do the job but this product is amazing. I've used it on ceiling mould, tile grout in shower and window seals..all sparkling again now. Love, love, love it

  • 5 / 5Quality

    5 / 5Value

    15 October 2018

    Mould spray

    I bought this Mould spray today and am very happy with my purchase.

  • 5 / 5Quality

    5 / 5Value

    10 September 2018

    best product for cleaning

    This is the best product on the market for getting rid of those annoying mould marks in the bathroom.

  • 5 / 5Quality

    5 / 5Value

    18 August 2018

    Wow...this spray is brilliant

    I would not hesitate to recommend this item as it gets rid of mould in seconds/minutes. It is well worth the price.

  • 5 / 5Value

    5 / 5Quality

    09 June 2018


    Best mould remover I have used. Have not needed needed to repeat its stopped / slowed the mould returning

  • 5 / 5Quality

    5 / 5Value

    09 April 2018

    Maybe they got in through the window.

    Being a guy I just picked up the bottle and didn't bother to read the instructions. I glanced at them as if reading. Test on small area blah blah blah. Pulled the safety cap thing and off we went. Spray spray spray, and leave for 30 minutes. We had some mould that I'd been trying to clean with elbow grease for some time but had resigned to the fact that it would not clean off. Anyway. The product was on the mould now and I had left the window open as the smell was very strong. 30 minutes later I walked into the bathroom and to my amazement the mould was completely clear. A quick wipe down with a wet cloth to removed the product. I did check the window to see if anyone have climbed in and done the cleaning while I was out of the room, and no it was this amazing product

  • 5 / 5Quality

    5 / 5Value

    20 December 2017

    Very effective

    A product that absolutely works! Very effective on moulds. Moulds disappeared after few minutes of spraying the area and I didn't even have to wipe it as the mould just vanishes. The smell is quite strong like bleach so you have to ventilate the area well after spraying.

  • 5 / 5Quality

    5 / 5Value

    12 September 2017

    I buy this time & time again!

    This is buy far the best cleaning product I buy, and I buy it in the bulk load just in case RD sell out! Hands down the best product to keep your tiled bathroom and shower looking like new after every use - a quick spray and leave to soak in and do it's thing for 10-15 mins - thats all it needs! i live in a hard water area so limescale is a huge problem for all areas of the bathroom and kitchen - HG mould spray sorts them out and makes them look like new, especially around plug holes, taps and toilet bowls. mould and mildew built up around window & conservatory frames over winter with windows closed and heating on is a common issue, this HG products gets rid of it straight away with minimal effort and no need to scrub at all, a simple spray and wipe does the trick; mould is gone, looks brand new. highly recommend this product, and it should be a staple cleaning bottle under everyone's sink! don't be put off by the price tag - it's worth every penny and knocks the socks off loads of other more highly advertised brands. doesnt need a tv advert or gimmick, it sorts every issue with ease.