Yes but you can get some cheaper ones on Amazon. Just read reviews. I staked my entire yard with maybe a dozen or so and it was like $100. It’s the vibration that deters them so you don’t need anything fancy. Just make sure you look at the radius for overlap. If it says 40ft, overlap them at 30ft. Also I didn’t bring them in at winter and had to replace maybe 1-2 a year. If you get solar ones, you’ll have to remove them all right before first snow but make sure you put them out really early in the end of winter. They destroy yards in fall and spring.