@KrustynLara In Europe the open field system means that there are naturally occurring borders criss crossing rural areas. Here in the UK in a closed field system we have to be inventive. Video shows Ari testing out my latest attempt at an all weather, mobile border. It's 50 m of drainage pipe and if it works I will attach more 50 m lengths and pull them into different spaces around the farm. I am hoping that this will be less work than putting up and taking down fences. We will go back to mowing a line when the grass comes again next year. No prongs or electric collars used on these dogs. It's never necessary.