ROUNDUP® Ready To Use Pull & Spray 5 Litre Weedkiller. ROUNDUP® Weedkiller is the world’s selling herbicide, used in gardens everywhere. ROUNDUP® is a weed killer that kills the root of the plant so that weeds never come back.ROUNDUP® ALL PURPOSE Pull ‘N Spray 5.0LWeedkillerThe Scotts Company (UK)ROUNDUP® ALL PURPOSE Pull ‘N Spray 5.0L