As it is dark on taking the dogs out instead of having them thunder up to me or into me I have flashing collars. Dog pet shops/stores want to charge around £10.00 for collars, and lights are around £4.00. I got mine from Tesco for £2.50 although it is an armband for a cyclist. When switched on you can have them on, on and flashing, or off. Velcro fitting and they will fit the deerhounds. Bargin!

Yes, I paid a fortune for mine at a fancy pet shop. Later I found ones like what you're describing Wallace at a dollar store and stocked up! Live and learn.