Gravity feeders and automatic dispensers: when they help
Free-feeding devices solve a scheduling problem and create a portion problem. Where they genuinely fit, and where a timed feeder is the better answer.
Measuring dog food: why the scoop in the bag is the problem
A "cup" of kibble is a weight, not a volume, and the scoop that came free with the bag is neither. How to measure a portion you can repeat.