The spray is a fertilizer, too. I looked for a link, but couldn't find one. Shame if they stopped making it, b/c it really was good.
As for fencing to keep deer out....I tell you, the deer are maddening to deal with, and they jump high. They look beautiful, but they can really mess with your landscaping. They eat everything, it seems. It sucks to get all excited, spend money and time planting, and then wake up to find stubs in your garden and deer tracks everywhere. Can you tell that's happened to me?! There's pretty much nothing I know of that will keep deer out of your yard altogether, so the best bet is to learn about what they don't like to eat and let that be the 'spine' in your garden. Then, the first season, maybe have a couple smaller areas where you have the fun stuff that you know you have to compete with them over...and see how it goes. Are you thinking veggies, flowers, or both??