As long as your poodles hair isn't covering any of the nail (it can block your view of how far back you can clip. If it's in the way, clip the hair first), I would recommend using these nail trimmers. If your poodle is a miniature or standard size, I'd recommend getting the large size trimmer. If he's a toy, I might get the smaller one although I haven't had experience with one. I have big and little dogs (Chihuahuas and German Shepherds and Bernese Mtn Dogs) and I use the large one on all of them. Because the cutting edge is so sharp, trimming your dog's nails won't hurt him (assuming you don't cut into the quick). There are a couple of reasons why other nail trimmers might cause pain or discomfort to your dog. If the blade isn't real sharp, the trimmer can have difficulty cutting the nail, in which case your little guy might struggle. In struggling he could try to twist away resulting in stress to the nail, his foot and leg and his mental state. Because these Miller Forge trimmers are sharp they'll clip right through the nail with very little effort on your part. No struggle, no twisting, no discomfort or pain.
If I could recommend a very time consuming but successful way to calmly condition your doggie to accept nail trimming, here it is. By the way I realize that for some dog owners, the conditions for this method will be virtually impossible to create. For those I am truly sorry and commiserate. I've been there. For starters you need to be able to create the right atmosphere. This can't be rushed. Do it only when you have time to relax (I know. With some people this is a hopeless case already). Choose a quiet room (I know. With some people this may be impossible. Sorry). If you're lucky enough to have quiet down time, you may proceed. Now, hopefully your little guy doesn't struggle when you cradle him laying on his back (he's laying on your lap). I slowly and quietly stroke his tummy from his chest on down. I continue this slow (must be slow) gentle stroking and in a slow calm soft voice with each stroke I say "such a good boy....... such a good boy....... such a good boy" or some such words. The slow soothing soft voice and gentle stroking can make him very sleepy. I continue this for five minutes or more until he's completely relaxed. Most of my dogs can now fall asleep doing this. Then I slowly lift one paw and gently touch his nails with my fingers. If he fidgets or starts struggling, slowly put his foot down. I go back to slow soothing stroking and speaking. This may be all you can do for the first day. Next day I start all over again, cradling him between my legs (I sit on the floor while I'm doing this). This slowly but surely conditions him to relax while he's laying on this back. With the big dogs I get them to lay down on a big cushion on their side and I sit down on the floor right next to them so we're touching. Then I slowly and soothingly start the stroking with the calm soft voice. When my dog is calm, relaxed and sleepy I'll pick up a foot and gently touch his nails. When he accepts the touching of his feet with my hands, then I'll touch the trimmer to a nail. Ultimately, my dog will remain relaxed enough to accept one nail to be trimmed. Take absolute care to clip off just a little at first. Eventually, you'll be able to trim off more but always be careful to take it slow. Might I remind you that this can be a l-o-n-g slow process - I mean weeks .... even months, if you have the patience to keep at it. Every day condition your dog to relax and you'll relax too. If nothing else, gentle touching and soft voice will create a deeper bond between you and your dog. And, after you're both accustomed to it, you can use this calm stroking technique to relax in a lot of different situations. Every dog is different but they can all learn to relax and enjoy the stroking and soft calm voice. You'll come to enjoy it too. Time to take a nap.