Yes, that's a good point about a deeper litter box. I have tried a few different litters before and get the same behavior. So, it may be down to the stinkiness. He eats NutriSource Cat and Kitten Chicken and Rice dry cat food. I'll add this info to the post too.
My 1 year old cat digs a lot after he's done his business, particularly #2's. He will dig and successfully cover up his poop, but that never seems to be enough for him. He goes the extra mile. He seemingly has to dig and cover it from all angles. He'll sometimes - most times - finish digging and...