Roundup Fast Action Total Weedkiller Refill – 5 Litre – Glyphosate-Based Garden Weed Control – Kills Roots for Long-Lasting R
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
We track Roundup Fast Action Total Weedkiller Refill – 5 alongside 38 other gardening products, comparing it on rating, how many people have rated it and what it currently costs. According to the listing: Refill for Fast Action Roundup Pump 'N Go ready to use weed killer. Go for up to 3 minutes of continuous spraying. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.6 out of 5 from 7,675 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Roundup
- Amazon rating
- 4.6 / 5 from 7,675 ratings
- vs Gardening
- 0.2 above the category median of 4.4
- Rank in category
- 3 of 39 rated gardening we track
- Price position
- Towards the top of the range (category spans £2.29 to £31.99)
- How proven
- Well established, above-average review volume
How it compares in Gardening
Across the 39 rated gardening products we track, the typical score is 4.4 out of 5. This one sits at 4.6, which puts it in the upper quarter of the category rather than level with it. Where almost everything is rated well, the gap at the top is small in points and large in practice. That places it third of the 39 we rank here.
It carries 7,675 ratings against a category median of 4,311. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the upper third of a category running from £2.29 to £31.99, where the midpoint is about £8.99. It is priced above the field and rated above it too, so the premium is at least matched by how buyers rate it.
Worked out from the 39 gardening products in our catalogue, not from the brand's own claims. How we rank →
Key features
- Refill for Fast Action Roundup Pump 'N Go ready to use weed killer
- Go for up to 3 minutes of continuous spraying
- Systemic weed killer that kills from the inside out
- Kills the root so weeds don't come back
- Results visible in 1-2 days
