Will it kill ivy?

Although difficult to kill completely, you can control Ivy with ROUNDUP®. Spray new, soft leaf growth in spring, before the wax layer thickens and hardens, with ROUNDUP® Tough Ready to Use Weedkiller. If the weed is too near desirable species for spraying, simply brush the leaves with neat ROUNDUP® Tough Concentrate or ROUNDUP® PowerMAX Concentrate. Where ivy is growing upwards and has a distinguishable trunk it can be cut and the freshly cut stump painted with neat ROUNDUP® Tough Concentrate Weedkiller or ROUNDUP® Concentrate PowerMAX Weedkiller during the dormant season (Autumn/Winter).