---
product_id: 48323114
title: "Mould Spray - Effective Black Mould & Mildew Cleaner, Removes Stains – 500ml"
brand: "hg"
price: "$45"
currency: NZD
in_stock: true
reviews_count: 11
category: "Hg"
url: https://www.desertcart.nz/products/48323114-mould-spray-effective-black-mould-and-mildew-cleaner-removes-stains
store_origin: NZ
region: New Zealand
---

# multi-surface indoor/outdoor use 500ml targeted spray prevents mould re-growth Mould Spray - Effective Black Mould & Mildew Cleaner, Removes Stains – 500ml

**Brand:** hg
**Price:** $45
**Availability:** ✅ In Stock

## Summary

> 🧼 Say goodbye to mould, hello to spotless spaces!

## Quick Answers

- **What is this?** Mould Spray - Effective Black Mould & Mildew Cleaner, Removes Stains – 500ml by hg
- **How much does it cost?** $45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/48323114-mould-spray-effective-black-mould-and-mildew-cleaner-removes-stains)

## Best For

- hg enthusiasts

## Why This Product

- Trusted hg brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful 500ml Spray:** Precision application with minimal waste for fast, effective mould removal.
- • **Effortless Deep Clean:** Lifts stubborn black mould and mildew stains without heavy scrubbing.
- • **Versatile Surface Savior:** Safe and effective on tiles, grout, plaster, wood, and outdoor furniture.
- • **Professional Grade Formula:** Chlorine-based bleaching action trusted by experts for visible results in 30 minutes.
- • **Stops Mould Before It Starts:** Not just cleans—prevents re-growth to keep your spaces fresh longer.

## Overview

HG Mould Spray is a 500ml professional-strength cleaner that quickly removes black mould, mildew, and algae from a wide range of indoor and outdoor surfaces. Its chlorine-based formula not only eliminates stains but also prevents mould re-growth, making it ideal for bathrooms, kitchens, patios, and more. Easy to use with a targeted spray, it delivers visible results within 30 minutes, restoring surfaces to their original clean appearance.

## Description

Product Description The HG Mould Spray cleaner quickly and effectively removes mould, mildew and fungus from almost any surface, whilst preventing re-growth. Ideal to use on the silicon seal between the bathtub and wall, on outdoor furniture, around window frames or on plastered walls. This anti mould foam is also suitable for cleaning grout, painted ceilings, swimming pool tiles and seals, as well as mouldy stains in the garage, shed and conservatory. The easy to use spray rapidly removes all brown and black marks caused by mould, fungus and algae - both indoors or outdoors. We also have a foam spray version of the mould and mildew cleaner: HG mould remover foam spray Includes: 1 x HG Mould Spray (500ml spray bottle, 186050106) How to use HG Mould Spray: The mould cleaner has a bleaching effect. If in doubt, test first in an inconspicuous place. 1. Spray the surface from a distance of 3 to 5 cm with HG mould spray. 2. Leave to work for 30 minutes and then clean with water and a sponge. Contains chlorine based bleaching agents. We recommend using gloves and ventilating well during use. Use biocides safely. Always read the label and product information before use. Ingredients Mould remover P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions Remove the locking clip, press the nozzle on the front and turn a quarter. Test before use, spray from 3-5cm and leave it for 30 minutes. Repeat if necessary and turn the nozzle a quarter backwards to block it. Remember to rinse the nozzle with hot water before reusing. For large surfaces with green deposits we recommend HG algae and mould remover Safety Warning Attention: we recommend you to ventilate well during use and to wear rubber/plastics gloves. Prevent splashing on clothing, (high) gloss paint and laminated blinds. Rinse with water immediately in case of contact with skin, clothing and sensitive surfaces. Avoid contact with metals such as prints on ornamental strips, aluminium and stainless steel. Do no treat coloured surfaces. We do not recommend using this product on artexed ceilings. In elastic grouting (for instance silicone paste) sometimes some permanent brown discolouration may occur after use. In badly glazed tiles and old tiles with hairline cracks brown discolouration may occur. This brown colour can possibly be removed with hypo (sodium thiosulfate), which can be obtained from your customer service department. Do not reuse the bottle. Medical personnel can request the data sheet via +31 (0)36 54 94 777 the consumer's information sheet can be obtained via www.HG.eu warning h315- causes skin irritation. H319- causes serious eye irritation. H400- very toxic to aquatic life. Euh206- warning! Do not use together with other products. May release dangerous gases (chlorine). P101- if medical advice is needed, have product container or label at hand. P102- keep out of reach of children. P264- wash hands thoroughly after handling. P273- avoid release to the environment. P305+p351+p338- if in eyes: rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P337+p313- if eye irritation persists: get medical advice/attention. Box Contains 1 x bottle of HG Mould Spray 0.5L Manufacturer Contact Information Unit 2 Lanswood Park Colchester Co7 7Fd See more

Review: Excellent mould remover – fast, effective, and easy to use - I’m genuinely impressed with the HG Mould Spray. It does exactly what it promises and works incredibly fast. I used it on stubborn black mould and mildew in my bathroom (around the shower seals and tiles), and the results were visible within minutes. The stains lifted without any heavy scrubbing, leaving the surfaces looking clean and fresh again. The spray is easy to apply, clings well to vertical surfaces, and covers a good area. A little goes a long way, so the 500ml bottle feels great value for money. While the smell is strong (as expected for a powerful mould cleaner), it clears quickly with ventilation and is absolutely worth it for how effective the product is. What I really like is that it doesn’t just mask the problem — it actually removes deep-set mould stains and restores surfaces to their original appearance. Perfect for bathrooms, kitchens, and any damp areas. Highly recommended if you’re dealing with mould or mildew and want a reliable, professional-level cleaner that actually works. I will definitely be buying this again.
Review: ⭐️⭐️⭐️⭐️⭐️ Brilliant product – worked far better than expected - I was initially skeptical after reading some of the negative reviews, but this HG Mould Spray truly amazed me. I had visible mould patches on an internal wall near the skirting board, and after spraying it and leaving it to work, the mould started disappearing without the need for heavy scrubbing. The difference was honestly “before and after” level. It’s very easy to use, effective, and saves a lot of effort compared to other products I’ve tried. Just make sure the room is well ventilated while using it, as the smell is quite strong (as expected with mould removers). Overall, I’m extremely happy with the result and would definitely buy it again. Highly recommended!

## Features

- Causes serious eye irritation.
- Causes severe skin burns and eye damage.
- Causes skin irritation.
- Use biocides safely. Always read the label and product information before use.
- Very toxic to aquatic life.
- Warning! Do not use together with other products. May release dangerous gases (chlorine).
- The effective mould remover spray & mildew cleaner: Effortlessly eliminates all moulds, making filthy black stains disappear, whilst preventing re-growth
- Suitable for a wide range of surfaces: Removes mould & fungus from plastered walls, tiles, bathroom seals, grout, windows, outdoor furniture & more
- For indoor or outdoor use: Kills algae & mould marks around swimming pools, in the garage, shed, washing area, shower cubicle, sauna & conservatory
- Easy to use spray: Quick & simple to use directly onto mould or mildew in damp areas, with a targeted spray action to reduce splashing
- 500ml size HG Mould Spray: Anti mould cleaner with a bleaching effect. Test first in an inconspicuous place before applying

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IU40HQ |
| ASIN  | B000IU40HQ |
| Best Sellers Rank | 9 in Grocery ( See Top 100 in Grocery ) 1 in Mould Removers |
| Brand | HG |
| Customer Reviews | 4.6 4.6 out of 5 stars (42,529) |
| Customer reviews | 4.6 4.6 out of 5 stars (42,529) |
| Date First Available | 21 Sept. 2006 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Format | Spray |
| Is discontinued by manufacturer  | No |
| Item model number  | 186050106 |
| Manufacturer  | HG Hagesan (UK) Ltd, uk home improvement, HGHAG |
| Manufacturer contact | Unit 2 Lanswood Park Colchester Co7 7Fd |
| Product Dimensions  | 2.3 x 3.4 x 4.3 cm; 500 g |
| Product Name | HG Mould Spray |
| Storage Instructions | Transport and store cool, dark and in an upright position. |
| Units | 500 millilitre(s) |
| Volume | 0.5 Litres |
| Weight | 500 g |

## Product Details

- **Brand:** HG
- **Item form:** Spray
- **Item volume:** 500 Millilitres
- **Material Type Free:** Silicone Free
- **Material feature:** Silicone Free
- **Scent:** Unscented
- **Special feature:** Non Toxic
- **Specific uses for product:** Bathroom
- **Surface recommendation:** Tile
- **Unit count:** 500 millilitre(s)

## Images

![Mould Spray - Effective Black Mould & Mildew Cleaner, Removes Stains – 500ml - Image 1](https://m.media-amazon.com/images/I/71sSOvr1FEL.jpg)

## Questions & Answers

**Q: A corner of my bedroom is covered with mould. Can I use it on painted wall?**
A: Hello, yes you can use it on a painted wall, i also had the same problem, i sprayed the area and left it for about 15 mins, i used some warm water and a cloth, and it wiped away, i have not had any mold return since, depending on the mold you might want to leave the spray on for longer, its great stuff and works a treat, good luck with your mold problem.

**Q: I have some mould behind some boxed in pipes, so it would be difficult to wash area after application**
A: I would still squirt some down there and mop up any seepage, if you do it at regular intervals I guess in time you'll get it all!.  It's really good stuff. R

**Q: If I use this on my bedroom ceiling will I have to paint the ceiling afterwards. i.e. will it discolour or attack the paint ?**
A: You can use it on the ceiling. Once you have sprayed leave it fir 15-20 min but try not To use the room for 24 hours. 
I used mine but no paint came off. Within minutes mould was gone

**Q: I used this on several areas of mould - I didn't clean off again as I don't want the mould to return - should I clean it off or will it be ok ??**
A: Mould got so bad around my bathroom window I sprayed all around it including the paintwork and left it on. After about 40 mins I took a look and the mould had completely disappeared leaving paintwork and window sealant clean and mould free. Might add I sprayed it on gloss painted toilet seat a few weeks ago (didn't read the instructions not to spray it on high gloss) and the white toilet seat turned bright yellow despite rinsing with clean water. I left it thinking I'd have to replace the seat but after a few hours it turned back to white again.!! great product despite the strong bleach smell.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent mould remover – fast, effective, and easy to use
*by S***E on 22 January 2026*

I’m genuinely impressed with the HG Mould Spray. It does exactly what it promises and works incredibly fast. I used it on stubborn black mould and mildew in my bathroom (around the shower seals and tiles), and the results were visible within minutes. The stains lifted without any heavy scrubbing, leaving the surfaces looking clean and fresh again. The spray is easy to apply, clings well to vertical surfaces, and covers a good area. A little goes a long way, so the 500ml bottle feels great value for money. While the smell is strong (as expected for a powerful mould cleaner), it clears quickly with ventilation and is absolutely worth it for how effective the product is. What I really like is that it doesn’t just mask the problem — it actually removes deep-set mould stains and restores surfaces to their original appearance. Perfect for bathrooms, kitchens, and any damp areas. Highly recommended if you’re dealing with mould or mildew and want a reliable, professional-level cleaner that actually works. I will definitely be buying this again.

### ⭐⭐⭐⭐⭐ ⭐️⭐️⭐️⭐️⭐️ Brilliant product – worked far better than expected
*by A***F on 14 January 2026*

I was initially skeptical after reading some of the negative reviews, but this HG Mould Spray truly amazed me. I had visible mould patches on an internal wall near the skirting board, and after spraying it and leaving it to work, the mould started disappearing without the need for heavy scrubbing. The difference was honestly “before and after” level. It’s very easy to use, effective, and saves a lot of effort compared to other products I’ve tried. Just make sure the room is well ventilated while using it, as the smell is quite strong (as expected with mould removers). Overall, I’m extremely happy with the result and would definitely buy it again. Highly recommended!

### ⭐⭐⭐⭐ Spot-On Mould Remover That Actually Delivers
*by D***H on 9 November 2025*

I recently used the HG Mould Spray (500 ml) and it genuinely exceeded my expectations — for context, I’m an accountant by day, creator by night, so I know the value of something that works efficiently and cleanly. What worked well: • The spray formula really pulled mould and mildew out of grout lines, seals and bathroom corners where it had been creeping in. No endless scrubbing. • One application restored the surface so it looked fresh again — the whitish-background tiles looked uniform, the stains were fading. • The 500 ml size is generous; I had enough for the shower area, skirting board and a window-frame seal and still had some left. • The product is reliable: it’s from a well-known cleaning brand, and the specs clearly list use on tiles, grout, plastered walls, outdoor furniture and more. What to keep in mind: • The smell is strong — it has a bleach-type odour, so good ventilation is essential. Some users commented it could linger. • After spraying you’ll need to rinse or wipe the area; it’s not a ‘spray and forget’ for very heavy infestations. Some very deep mould spots may need a second treatment. • As always with potent cleaners, gloves and protective measures are recommended (especially on sensitive surfaces) — the manufacturer’s instructions emphasise safety. Overall verdict: If you’re dealing with persistent mould or mildew — especially in damp areas like bathrooms or around windows — this product is a smart investment. It delivered fast, visible results with minimal effort. If your priority is something reliable and effective (rather than low scent or ultra-eco gentle), this hits the mark.

## Frequently Bought Together

- HG Mould Spray, Effective Mould Spray & Mildew Cleaner, Removes Mouldy Stains From Walls, Tiles, Silicone Seals & More - 500ml , Pack of 1
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- HG Limescale Remover Foam Spray Super Powerful, Sink Tap & Toilet Limescale Remover, Bathroom Cleaner & Descaler for Shower Heads, Chrome, Baths & Screens - 500ml

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-11*