Product code: MACHI-POWER
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MAC Hi Power - Moss & Algae Cleaner on Hard Surfaces

Moss Algae Cleaner (MAC) Hi-Power for preventing moss and removing biofilm such as algae, mould, lichen & bacteria from hard surfaces with staining

£17.00 + VAT £20.40 inc VAT

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£17.00 + VAT £20.40 inc VAT

Remove & control moss, algae, mould & lichen from all hard surfaces including patios, paths, driveways, roof, artificial grass, tennis courts, concrete, render & sandstone with staining.

Powerful, reliable moss control and cleaning results from this product which contains 4x more active than competitor products! 

Contains 40% w/w DDAC (quarternary ammonium chloride)

Coverage: Treats up to 280m2  (with 1lt pack) or 1,400m2 (with 5lt pack)

No need to scrub or pressure wash, just dilute and apply. This product typically works in 2-4 days (depending on weather), it then continues to degrade unwanted growth, preventing re-growth for months after application.

Key points:

  • Suitable for many hard surfaces to clean off discolouration of algae, lichen, mould, etc
  • Use a pump sprayer or knapsack and thoroughly drench affected areas
  • Does not stain or discolour surfaces*
  • When used on porous surfaces, MAC Hi-Power may prevent the return of moss or algae for a significant period
  • Suitable for drives, patios, brick work and render, artificial grass, tarmac, concrete, poly tunnels, glass houses and other hard surfaces
  • Use MAC Hi-Power even in cooler weather however, best results are at temperatures above 8oC
  • Results may be affected if significant rain falls within 20-24 hours of application

Application rates:

  • Winter rate               250ml Mac Hi Power in 10lt water to cover <50m2             (equivalent to 50 Lt/ha or 20 Lt/ac)
  • Summer high rate   200ml Mac Hi Power in 10lt water to cover <50m2             (equivalent to 40 Lt/ha or 16 Lt/ac)
  • Summer low rate    180ml Mac Hi Power in 10lt water to cover <50m2             (equivalent to 36 Lt/ha or 14.5 Lt/ac)

(Application rate can be increased by 20% in very challenging situations or when treating very porous surfaces).


  • Do not spray grass - bleaching might result from accidental drift or overspray. Grass will recover after a period of time.
  • Do not use on lawns, plants or in aquatic areas.

*If in doubt always test an inconspicuous area before overall spraying

HSE no. 10341

Coverage 1 L <280 (m2) or 5 L <1,400 (m2)
Contains 40% w/w DDAC (quarternary ammonium chloride)
Area of Use Hard Surfaces

Hand-held Application Rate

Summer - low moss/algae load 180 ml in 10 L water covers up to 50m2
Summer - high moss/algae load 200 ml in 10 L water covers up to 50m2
Winter 250 ml in 10 L water covers up to 50m2

Product Usage Calendar

*KEY - Green = suggested period of use

Safety Sheets (MSDS)

View FileMAC Hi Power Product Label    Size: (230.5 KB)
View FileMAC Hi Power Safety Sheet    Size: (227.84 KB)

MAC Hi Power - Moss & Algae Cleaner on Hard Surfaces is rated 3.67 stars by Progreen Weed Control Solutions customers based on 3 product reviews