Product review (5 stars): Does its job.  Stays securely in place but easy to remove if necessary.
This works exactly as I expected it to.  It stays securely in place and keeps food from flying out.  If something like a peach pit gets stuck in the disposal, it's easy to remove the baffle so you can reach into the disposal with your hand to pull the offending item out.  If there's one thing to note, it's that if a lot of food ends up on top of the baffle at once, it won't go through, even small items like corn or rice.  That's because the middle hole isn't all that big.  Just use a spoon or high flow of water to push it down into the hole and it's fine.  In my sink, the previous baffle (which is permanently attached) eventually started falling apart, with pieces of rubber coming off.  I tore off as much of the old baffle's rubber as I could short of taking the drain apart.  Then I put the new baffle down into the drain so it rests on what's left of the old baffle.