Chickens wasting food + need ideas for feeders that don't spill please

[MysteryChicken]

I have the opportunity to borrow one of these but you are the only one i can find with this same one. Thoughts? Pros cons? Sell it to me lol I don't know how to make a new thread or message you from my phone so a reply it is lol

The feeders are great, it's pretty good at preventing food wasters, but one may figure out how to do it anyways.