BEST FOOD EVER.
Weird that your guys are having a hard time with the kibble size though. Finley has eaten their puppy food, which has the same size kibbles as their other varieties, since he was bout 8 or 9 weeks old and a tiny 1.5lbs. It slowed him down a bit at the time, as he was used to a much smaller kibble, but he had no problem with it. Now, at four months old and 3.7lbs, he doesn't even chew half the time lol. Gizmo has no problem with it either, and he's 5lbs.
You could try adding a bit of warm water to it to soften the kibbles, which will make it easier to chew.
Not sure what the variety the trial bag you have is, but I HIGHLY HIGHLY HIGHLY recommend their Six Fish version over the regular adult