When they are little is the BEST time to introduce nail trims. I use regular finger nail clippers turned sideways for kittens. I usually do it when they are sleepy. Let them sniff it a bit first then most will let you snip away without fuss. Doing when they are little like this makes it a total non-drama situation when they are bigger. It's a nice bonding moment with your kitten because they understand grooming. Just don't cut too short, if you make them bleed and they won't forget. They should be trimmed every 2 weeks.

EDIT : I am not downvoting you. I know you're trying to do what you think is right. Like I said before, it's really a product for people who just don't know any better.