Lawn & garden
Weedol Lawn Weedkiller Concentrate dupe
Why pay around £14.99 for Weedol? The bulk active is MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate — 33% less per working litre than a typical shelf pack.
From the retail pack to the active and the mix
1 · Retail
Weedol Lawn Weedkiller Concentrate
500 millilitres · £14.99 typical snapshot
Water (micro-emulsion)
2 · Active
MCPA, fluroxypyr and clopyralid
7% on the label
94-74-6 / 69377-81-7 / 1702-17-6C9H9ClO3 + C7H5Cl2FN2O3 + C6H3Cl2NO2
Bulk MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate
3 · Mix
15 ml in 1 L water (sprayer; 10 m²) or 15 ml in 5 L (can; 10 m²)
£0.30 per working litre · 33% less than the shelf pack
- Active
- MCPA, fluroxypyr and clopyralid
- CAS
- 94-74-6 / 69377-81-7 / 1702-17-6
- Dupe
- MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate
- Saving
- 33% / L
Saving is per litre of working-strength mix versus a typical pack price, not versus the DIY kit total. Shop prices move — always check the listing.
Label teardown
What the pack promises versus what the label chemistry actually is.
The marketing claim
“Kills weeds, not lawns”
The chemical reality
Current Weedol Lawn (MAPP 17599) is MCPA at about 53.4 g/L plus fluroxypyr 10.7 g/L and clopyralid 5.4 g/L — a three-way selective turf herbicide, not Doff’s mecoprop-P/dicamba pair and not Pathclear glyphosate. A 1 L amateur pack of that same three-way is the working spray without the 500 ml carton tax.
Active vs filler
7% MCPA, fluroxypyr and clopyralid · 93% carrier / filler — Water (micro-emulsion)
- Typical retail
- £14.99
- 500 millilitres
- Estimated active cost
- £10.00
- Scaled from bulk £19.99 / 1 litre
- Indicative markup
- 1.5×
- Snapshot maths, not a live shop price
The Marketing Claim & The Catch
A 500 millilitres pack of Weedol Lawn Weedkiller Concentrate typically retails around £14.99 in lawn & garden. That is a UK shelf-price snapshot for the maths on this page — not a live shop quote or a manufacturer RRP. Listings, sizes and deals move. The marketing line is that you are buying a finished lifestyle product, not a weighed chemical.
On the pack: Kills weeds, not lawns; Kills dandelions, daisies and clover; and 500 ml treats up to 333 m².
The catch: Current Weedol Lawn (MAPP 17599) is MCPA at about 53.4 g/L plus fluroxypyr 10.7 g/L and clopyralid 5.4 g/L — a three-way selective turf herbicide, not Doff’s mecoprop-P/dicamba pair and not Pathclear glyphosate. A 1 L amateur pack of that same three-way is the working spray without the 500 ml carton tax.
- “Kills weeds, not lawns”
- “Kills dandelions, daisies and clover”
- “500 ml treats up to 333 m²”
Proprietary Blend & Dosage Breakdown
The labelled active is MCPA, fluroxypyr and clopyralid at 7%. Everything else in the pack is water (micro-emulsion).
At 7% active, most of what you pay for is carrier and packaging. The brand is selling convenience, fragrance and a label — not a uniquely potent molecule.
Branded working strength is whatever comes out of the bottle. The bulk alternative is 7% MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate, mixed to 15 ml in 1 L water (sprayer; 10 m²) or 15 ml in 5 L (can; 10 m²).
- Labelled active
- MCPA, fluroxypyr and clopyralid
- 7%
- Carrier
- Water (micro-emulsion)
- Retail pack
- 500 millilitres · £14.99
The Active Chemical Alternative (Dupe Stack)
The dupe stack is MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate at 7% bulk. Indexed as CAS 94-74-6 / 69377-81-7 / 1702-17-6, formula C9H9ClO3 + C7H5Cl2FN2O3 + C6H3Cl2NO2. Buy it as 1 litre for around £19.99 from Amazon UK.
Working strength: 15 ml in 1 L water (sprayer; 10 m²) or 15 ml in 5 L (can; 10 m²). Indicative cost £0.30 per diluted litre — 33% below a typical branded pack on a per-litre basis, before you reuse leftover bulk.
Follow the mixing method and the supplier SDS. Wear the listed PPE. Do not mix incompatible oxidisers, acids or ammonia.
- Pesticide: read the HSE/MAPP label on the bottle you buy. Gloves, long sleeves. Keep spray off flowers, vegetables, ponds and water butts.
- Sprayer: 15 ml of the 53.4 / 10.7 / 5.4 g/L three-way concentrate in 1 litre of water covers about 10 m². Watering can: the same 15 ml in 5 litres covers the same 10 m² — more water, same active.
- Apply on a still, dry day when weeds are growing (typically April–September). Keep pets off until dry. Do not treat new lawns. Maximum applications as on the label.
- 1 litre of concentrate at 15 ml per 10 m² treats about 667 m² — two 500 ml Weedol cartons.
- Buy amateur-labelled MCPA/fluroxypyr/clopyralid a householder can legally apply. This is not mecoprop-P/dicamba (Doff / Weedol LN) and not glyphosate. Triple-rinse the sprayer; compost the first four mowings before using as mulch.
Dilution recipe
1 L working batch
Working strength 15 ml in 1 L water (sprayer; 10 m²) or 15 ml in 5 L (can; 10 m²). Educational estimate from the listed ratio — check the SDS before you mix.
Chemical
15 millilitres
MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate
Water
0.99 litres
Carrier / diluent
1% concentrate · 99% water by working volume (solids are dissolved into the water share).
Required PPE
Loading calculator…
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedWeedol | Raw active dupeDupeStack |
|---|---|---|
| Product | Lawn Weedkiller ConcentrateAmazon UK search — listing, not a confirmed seller | MCPA 53.4 g/L + fluroxypyr 10.7 g/L + clopyralid 5.4 g/L lawn concentrate |
| Pack / unit | 500 millilitres · £14.99 | 1 litre · £19.99 |
| Active | MCPA, fluroxypyr and clopyralid at 7%Carrier: Water (micro-emulsion) | 7% bulkC9H9ClO3 + C7H5Cl2FN2O3 + C6H3Cl2NO2 |
| CAS number | Not disclosed on pack | 94-74-6 / 69377-81-7 / 1702-17-6 |
| Working strength | Ready-to-use pack | Dilute 15 ml in 1 L water (sprayer; 10 m²) or 15 ml in 5 L (can; 10 m²) |
| Cost per litre | £29.98 / L typical pack | £0.30 / L mixed from bulk |
| Headline saving | Baseline | 33% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene)Eye protection. Indirect-vent splash goggles — not ordinary spectaclesVentilation. Use outdoors or with mechanical extraction |
Active ingredient and cheaper alternative — FAQ
Is this the same as Doff Concentrated Lawn Weedkiller?
Same job (daisies and dandelions in grass), different actives. Doff is mecoprop-P plus dicamba. This Weedol Lawn bottle is MCPA (CAS 94-74-6), fluroxypyr (CAS 69377-81-7) and clopyralid (CAS 1702-17-6). Weedol LN Conc is the Doff pair — read the MAPP number, not the word Lawn.
Is this the same as Weedol Pathclear?
No. Pathclear is glyphosate for paths and bare ground — it will kill the grass. This concentrate is a selective lawn herbicide. Do not treat them as interchangeable.
How do you mix the Lawn Weedkiller Concentrate dupe stack?
Pesticide: read the HSE/MAPP label on the bottle you buy. Gloves, long sleeves. Keep spray off flowers, vegetables, ponds and water butts. Sprayer: 15 ml of the 53.4 / 10.7 / 5.4 g/L three-way concentrate in 1 litre of water covers about 10 m². Watering can: the same 15 ml in 5 litres covers the same 10 m² — more water, same active. Apply on a still, dry day when weeds are growing (typically April–September). Keep pets off until dry. Do not treat new lawns. Maximum applications as on the label. 1 litre of concentrate at 15 ml per 10 m² treats about 667 m² — two 500 ml Weedol cartons. Buy amateur-labelled MCPA/fluroxypyr/clopyralid a householder can legally apply. This is not mecoprop-P/dicamba (Doff / Weedol LN) and not glyphosate. Triple-rinse the sprayer; compost the first four mowings before using as mulch.
DupeStack provides chemical concentration data and educational mixing guides only. Wellness pages compare food supplements, not medicines or prescribed treatments. Always review the supplier Safety Data Sheet (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Mixing and storage are at your own risk. Some links are affiliate advertisements (Amazon Associates, eBay Partner Network, and Awin when those programmes are live). Commissions do not change listed concentrations or calculator output.
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- Retail pack
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- Raw active
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- Retail pack
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- Retail pack
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£28.00Save 33% / L
Indicative DIY stack