JeeNee's Feet

JeeNee used to be able to skip every other farrier visit to the barn but her feet seem like they're breaking down earlier this summer for some reason. It's not been overly dry so I'm not sure why.

She has those big clydesdale feet and I want to make sure her dinner plate-sized hooves stay healthy. I'm wondering if I should buy her some type of supplement to put in her feed for her hooves. I'm not sure what to buy though. I have the stuff that looks like motor oil to brush on (for the life of me, I can't remember the name of it right now).

Her feet have always been bare.