I have creeping ivy growing up the back of my garage and creeping through the wall and roof how can l destroy it for keeps
Keep cutting it down to the base. In the spring when new leaves appear bruise them with your fingers and then spray with SBK brushwood killer and leave until it has died back - it will take some time. Every time fresh new leaves appear repeat as above. That will kill ivy off and you can then dig the roots out.
But if there are other ivy plants in the area they willl spread so you will probably need to do this every spring.