We had a section beside the house last year with potatoes, sunflowers, a couple tomatoes (late) and pumpkins. Early last spring, I saw a group of 16 deer about 250 ft from the house, so there's a deer population here. I tried using some of the deer ___ powder repellent around the edge of the garden and a couple fruit trees. Didnt stop the deer from nibbling on the fruit trees. They didn't mess with the potatoes or sunflowers at all. When young pumpkins started appearing, the deer started eating both the pumpkins and leaves. The powder either stopped working, or never worked and they just weren't interested until pumpkins came along. They also ate at the tomato plants. I started covering any new pumpkins I saw with a tomato cage. If not for that, they would have eaten them all.
This year, I strung up some 4ft chain link around it. I know deer laugh at 4ft, BUT - we also have a small garden section in the back yard in a 4ft fence that the deer haven't touched in the past two years. I'm thinking the fence is just enough discouragement that they go eat something else. I know they're coming right over it if they get hungry, but there's plenty around for them to eat. My plan is if I see any signs of deer inside the fence, throw up another layer, fishing line, probably 5 feet out from the chain link fence.
Keith