Thank you little Beverly.
I'm not a big fan of greenies either, but I was trying to find something that could help keep his teeth clean since he's not a big chewer.
I ended up comparing the Trudog spray to the Petzlife (I hadn't heard of petzlife until you guys suggested it) spray and they're actually identical in ingredients, so I'm confident I can now keep his teeth in good shape and I've gone ahead and cut out the greenies.
I'm also switching his diet to raw...he's always been on Taste of the Wild, but the more research I've done and having read the threads here about it, I believe it's definitely healthier. Lola will be started on it as soon as she's old enough for me to bring home.