There is nothing quite like the slow creep of weeds and moss spreading across a freshly laid driveway or a once-tidy patio. Block paving, gravel and concrete give weeds plenty of places to take hold, and a good weed killer is often the most practical way to keep on top of them.
This guide covers seven products across two groups: glyphosate-based systemic killers and glyphosate-free contact alternatives, to suit different garden sizes and budgets. Always read and follow the label on any weed killer you buy.
Glyphosate or Glyphosate-Free? A Quick Word
Glyphosate products (Roundup, Gallup, Doff) are systemic. The weed absorbs the chemical through its leaves and carries it down to the roots, killing the whole plant. They are still widely sold to UK home gardeners, but labels set strict rules on how often and where you can use them, so check the label and keep them away from ponds, watercourses and wildlife.
Glyphosate-free products (Weedol Rapid, Resolva, Neudorff) here use pelargonic acid, a fatty acid, as a contact killer. They scorch visible growth quickly, but they may not reach deep perennial roots, so you may need to reapply. Neudorff WeedFree Plus adds maleic hydrazide to slow regrowth.
How We Chose
We compared products on speed of action, how long the effect lasts, coverage, and how easy they are to apply. We were also clear about what is in each bottle, and covered everything from ready-to-use sprays to economical concentrates.
Product Reviews
1. Weedol Rapid Weedkiller (1L Ready to Use) — Best Budget Pick
Weedol Rapid Ready to Use is a glyphosate-free, contact-action spray that uses pelargonic acid. It is aimed at quick results on young weeds and moss, and is a good fit for smaller patios and paths that need light, regular upkeep.
Key specs: 1L ready-to-use trigger spray, pelargonic acid, no glyphosate, results in around 3 hours according to the maker’s product information, maximum 4 applications per year (April to November).
Pros: – Widely available – Glyphosate-free – Fast visible results – Good value for small jobs
Cons: – Contact action means stubborn roots can regrow – Ready-to-use bottles work out expensive for large areas
Best for: Small patios and paths needing quick, spot treatment.
2. Resolva Path & Drive Ready to Use (1L) — Best Glyphosate-Free for Pet Owners
Resolva Path & Drive is a ready-to-use, glyphosate-free formula for hard surfaces. The maker describes it as bee-friendly, and it needs no mixing, which suits homes with pets and pollinators. Results are visible within hours to a day in decent weather.
Key specs: 1L ready-to-use (3L and 5L pump packs also sold), pelargonic acid 31.02 g/L, glyphosate-free, up to 8 treatments a year on hard surfaces.
Pros: – Glyphosate-free and described by the maker as bee-friendly – No mixing – Fast visible results – Rainfast claim from the maker
Cons: – Less persistent than systemic weed killers – Larger areas need the bigger packs
Best for: Family gardens with pets and pollinators.
3. Roundup Path & Drive Pump ‘n Go (5L) — Best Ready-to-Use Convenience
This glyphosate-based, ready-to-use product comes with its own pressure sprayer, so you pump it up, point the wand and walk along the joints without bending or mixing. The 5L pack treats up to 150 square metres according to the maker.
Key specs: 5L ready-to-use with built-in Pump ‘n Go sprayer, 7.2 g/L glyphosate, treats up to 150 m², maximum 1 treatment per year, rain within 6 hours reduces effectiveness.
Pros: – Built-in pressure sprayer – Systemic action reaches the roots – Good coverage – No mixing
Cons: – Contains glyphosate, so needs careful use and storage – Slower to show effect: first signs can take a few days up to four weeks depending on weather and weed type
Best for: Gardeners who want the easiest all-round spray for a whole driveway.
4. Gallup Home & Garden (1L Concentrate) — Best Value for Large Driveways
Gallup Home & Garden is a strong glyphosate concentrate that you dilute and apply with a pressure sprayer or a watering can with a fine rose. One bottle treats far more ground than ready-to-use sprays of a similar price.
Key specs: 1L concentrate, 360 g/L glyphosate, dilute before use, apply with your own sprayer.
Pros: – Superb value per square metre – Kills to the root – Ideal for large areas
Cons: – Contains glyphosate – Needs mixing and your own sprayer
Best for: Big driveways and gravel areas where you want the most coverage for the money.
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5. Neudorff WeedFree Plus (750ml Ready to Use) — Best Glyphosate-Free All-Rounder
WeedFree Plus combines pelargonic acid with maleic hydrazide, which is there to slow regrowth. Neudorff says visible results appear within a day, and the formula offers longer-lasting control than contact-only sprays.
Key specs: 750ml ready-to-use spray, pelargonic acid 31.02 g/L plus maleic hydrazide 4.95 g/L, glyphosate-free, 100ml per square metre, not for use on lawns.
Pros: – Glyphosate-free yet aimed at longer-lasting control – Fast results – Trusted brand
Cons: – Dearer than basic contact sprays – Stubborn perennials may need a second application
Best for: Patios and paths where you want quick results without glyphosate.
6. Neudorff WeedFree Plus Concentrate (1020ml) — Best Glyphosate-Free Concentrate
This is the concentrate version of WeedFree Plus. You mix 85ml into 0.5L of water using the bottle’s dispensing chamber, which brings the cost per treatment down and suits medium to larger areas.
Key specs: 1020ml concentrate (510ml also sold), pelargonic acid 186.7 g/L plus maleic hydrazide 30 g/L, glyphosate-free, needs a conventional sprayer.
Pros: – Glyphosate-free – Fast visible results – Better value than ready-to-use packs
Cons: – Needs mixing and a sprayer – Can scorch anything green it touches, so use a spray shield near plants
Best for: Medium to large hard-surface areas where you want to avoid glyphosate.
7. Doff Advanced Concentrated Weedkiller (10 x 80ml Sachets) — Best Systemic Concentrate Alternative
Doff is a long-established British brand, and its Advanced Concentrated Weedkiller is a glyphosate-based, systemic sachet product. Each 80ml sachet is mixed into a sprayer of water, which makes it easy to measure and store.
Key specs: 10 x 80ml sachets, glyphosate, dilute in a sprayer or watering can, suitable for paths, drives and garden areas.
Pros: – Systemic root-kill – Easy pre-measured sachets – Widely stocked
Cons: – Contains glyphosate – Needs mixing and your own applicator
Best for: Driveways, gravel and path edges where you want an affordable systemic option.
Comparison Table
|
Product |
Type |
Best for |
Guide Price |
|
Weedol Rapid (1L RTU) |
Glyphosate-free, contact |
Budget patio upkeep |
See card for current price |
|
Resolva Path & Drive (1L RTU) |
Glyphosate-free, contact |
Pet and bee-friendly |
See card for current price |
|
Roundup Path & Drive Pump ‘n Go (5L) |
Glyphosate, systemic |
Easy ready-to-use |
See card for current price |
|
Gallup Home & Garden (1L conc.) |
Glyphosate, systemic |
Large driveways |
See card for current price |
|
Neudorff WeedFree Plus (750ml RTU) |
Glyphosate-free, longer-lasting |
Best all-rounder |
See card for current price |
|
Neudorff WeedFree Plus Concentrate (1020ml) |
Glyphosate-free, contact |
Natural-acid concentrate |
See card for current price |
|
Doff Advanced Concentrated (10 sachets) |
Glyphosate, systemic |
Value root-kill |
See card for current price |
How to Get the Best Results
Apply on dry, still days with no rain forecast for at least six hours, as a downpour can wash the product off before it has worked. Warmth and sunshine speed things up, and late spring to early autumn is the best UK window.
Cover weeds until the leaves are wet but not dripping. Do not pull or disturb treated plants afterwards: systemic glyphosate products need intact leaves to carry the chemical to the roots. Contact products show browning within hours to a day. Systemic ones can take several days to a few weeks to show a full effect, so wait before deciding whether to treat again, and stick to the maximum number of treatments on the label.
If you would rather avoid chemicals, a long-handled patio weeding knife or a stiff wire brush clears moss and seedlings from block-paving joints, and a kettle of boiling water will knock back small weeds in a pinch. Brushing kiln-dried sand into the joints helps stop new weeds getting established.
Frequently Asked Questions
How long before weeds die? Contact, glyphosate-free products show browning within hours to a day. Systemic glyphosate products take longer to look dramatic, from a few days to a few weeks depending on weather and weed type, but they reach the roots.
Is weed killer safe around pets and children? Always follow the label. As a general rule, keep pets and children off treated areas until the spray has dried, and longer if the label says so. If this is a priority, the glyphosate-free options here, especially Resolva Path & Drive, are the easier choice.
Concentrate or ready to use? Ready-to-use sprays are simplest for a one-off patio job. If you have a large driveway or treat weeds every year, a concentrate is far cheaper over time, though you will need a sprayer or watering can to apply it.
Our Verdict
For most gardeners after a simple, effective spray, the Roundup Path & Drive Pump ‘n Go is the easiest all-round choice thanks to its built-in sprayer and root-killing action.
If you want to avoid glyphosate, Neudorff WeedFree Plus is the standout, combining fast results with longer-lasting control, while Resolva Path & Drive is the gentlest option for homes with pets and pollinators.
For large driveways, concentrates such as Gallup Home & Garden or Doff Advanced Concentrated offer the best seasonal savings. Match the product to your surface and garden, then apply it correctly for season-long control.
