Do you have a cat treat brand recommendation?

I have two kittens about 3 mo. old, and would love to know the names of some good treats for them. Preferably something available at grocery stores or PetSmart etc. I see some dental care treats, but one that I tried was quite large and very hard, so my kittens just lick them but can't handle actually eating them. They try, but give up. They are probably meant for adult cats? I would love an alternative that would be OK for kittens, something that can help their teeth, and other treats just for the fun of it.
Thank's!

feline greenies

and Bil Jac

the greenies were a hit here ... ingrediants are so so but the girls love them