Feeding a hedgehog?

The wildlife camera isn’t showing everything, we have a visiting hedgehog and a rogue Tom cat, both can be seen on the camera shots each night however we are not getting pictures of HH going into the cover, It’s weighted and barricaded to prevent old Tom accessing the food (he has his own dish) and usually the food disappears, last night only half was taken. The dish is sat at the back, I can’t imagine old Tom can reach that far but why would HH only take half?Possibly it’s slowing down on intake? Any thoughts?

We think the camera has been around for 9 years and perhaps expecting too much.
Just thinking, wonder if voles, polecat like dog food?