Weedol Rootkill Plus is a systemic weed killer, killing all garden broad-leaved and grass weeds down to the roots so they would not grow back.
One application is enough to kill all but the most stubborn garden weeds.
Do not apply to lawns or plants if you want to keep them.
Apply using a sprayer or watering can. As the weed killer degrades on contact with soil, you can replant or sow soon after planting (after at least one day is recommended).
Results begin to be visible in just 24 hours with weeds dying within 28 days.