I bought this edger / trencher because I had an invisible pet fence to install. I figured out that buying this wouldn't be much more than renting one for a day at the big box store. It worked like a charm. I roughly 2 hours I trenched a line around my property the size of about one acre. It never stalled, overheated or anything. It worked through the small stones found under most grass yards. What I really like the most about it was that it trenches a very neat and clean cut about 3 inches deep. When I ran the line in the trench and just used my hands to pinch the trench shut, the yard looked like nothing was ever done to it. Very nice. Now I have it to clean up the garden bed edges occasionally to give my yard the look of a professional landscaping service. It adjusts to fit your height, so if you find yourself leaning just a bit, take your time to adjust the tool. It's worth your back not straining the whole time. I plan on using it this fall to draw lines in my beds to plant rows of small spring bulbs easily.