you might consider using these prickle strips to stop them

Improves soil quality: The trough can be filled with compost or soil of your choice

Measuring 26cm wide

Dimensions: These liners measure 75cm (30 inches) by 15cm

while each panel is lightweight yet strong

Willow Hurdle Garden Lawn Edging (120cm x 20cm) - 10 Panels toilet roll holder you might consider using theseCreate a good looking natural border for your lawn and flower beds with this natural willow hurdle edging. Woven willow is the natural choice for strength and durability giving you a rustic finish for paths, patios, and drives. These hurdles come in a set of 10, require no maintenance and are installed in minutes and are perfect for a country garden effect. Please note: As this is a natural product it may show some signs of surface mould when