Power grinders feature a rough, rotating surface that is used to grind the pet’s nails down to the preferred length rather than actually clipping off the ends. They’re great for pets with very thick nails and for those that hate having clippers used on their feet. One of the problems with power grinders is the noise they make drives some pets nuts, and just turning them on can make dogs and cats run for the nearest hiding place. But once your pet becomes accustomed to them, grinders are actually easier to use than clippers. Look for a model with reduced noise, and your dogs and cats will thank you, and grinders with replaceable surfaces can ensure that you always have a nice, rough pad to use for nail grinding. Note that even if you choose to use manual clippers, a power grinder can help smooth off the ends of the nails after you are finished clipping them.