Hygeia Hytrol Weed Killer is a long-lasting solution for controlling weeds and other broad-leaved weeds. It's perfect for use in overgrown areas, such as gardens or pathways. For best results, apply this weed killer in late spring and early summer. It effectively controls weeds on a large area of 400m². The 500ml size makes it easy to use and store. Ideal for use in spring and summer.