I live in a typical suburban subdivision with an HOA agreement. So I've got to stay on top of my yard if I don't want a "nasty-gram" from the lady who drives around and makes sure that all the grass is mowed and the shutters are painted. The B&D Edgehog and the replacement blades are a breeze to use. I've got about 200ft or so of paved surface to edge and I do it every other week during the mowing season (which in this part of georgia is from march to october basically). I have only had the edger for about 7 weeks and used it 3 times. Each time it performed really well. I did a test run of taking off the blade and replacing it as if it was this replacement blade that I ordered (but don't yet need to install as the original is still plenty sharp). It goes on easily enough and the wear indicators will let you know when to change it.