You can remove shade netting in late summer after the last harvest and can put then
indoors for winters when not in use.Agronet and ground cover are also a part of shade netting.
Today's modern shade netting is durable and can last for up to several years and unlike banners, balloons and other scare devices shade netting is barely visible at a distance.
Of course shade netting can also prevent birds from growing nests around your home place, thus we say shade netting can save lot of money.