Declawing is an amputation. Like amputating your fingers up to the first phalanx or joint. It's not just claw removal and it could have other side effects like back problems for the lack of their daily scratching exercise among other things.
I'm going to give you a very good alternative and cruelty free:
It's called "Soft Paws" or nail caps
You can get them at any local pet store and they even come in many colors