Well, here's what I'm going to do when my Angels Eyes runs out. Although it was not too terrible, $15 at my groomer's. All it is made of is Freeze dried beef liver. That's it! So if you get some of those treats that are the dried liver, and feed one of those a day, I believe you should see the same results. Eating liver is supposed to remove toxins from their bodies somehow, which in turn makes their eye boogies lighter and less. Mine don't need anything done between their weekly baths
I got my bottle of AE about 1.5 months ago and have only used half of it so far, it only takes a sprinkle, so it does last.