Roundup Optima+ 1L Option:1L sweat proof with cold Twist and pour sweat proof with cold Twist and pour stopper allows you to pour without removing the stopper 50 year guarantee Note: Thermos does not recommend placing dairy products within the vessel seed beds and bedding plants Built in solar rechargeable power pack Works throughout the night Weather resistant housing Easy to use Sonic pulse and vibration every 50 seconds Coverage up to 30m² drives and flower beds Systemic weedkiller that kills from the inside out Kills the roots so the weeds don't come back Degraded in the soil by micro organisms New formula concentrate for treating larger areas Ideal for paths