We have a an overabanudance of deer here also, in town, where I live. For veggie gardens, the market gardeners around here put up electric fence. They don't keep it hot all the time, but bait it with peanut butter when it is hot, and always at the beginning of the growing season. The deer lick the peanut butter, get shocked, and tend to avoid the area after that. The same thing can work somewhat with groundhogs - one strand really low, baited with peanut butter. But keep the .22 or the shotgun handy season long.

I find that a strong stream of water alone works just fine with the aphids. It helps to stay right on top of it when the aphids first appear. A couple of weeks of blasting them off of the plants when they first appear every two to three days seems to take care of it.