Should I win the lottery (which presupposes first buying tickets, which is something I don't do) I would fund research for deer attracts. This could be sprayed on garlic mustard, multiflora rose, poison ivy, stilt grass . . . . Deer eat different plants at different times of year, especially does when pregnant and lactating. Different herds have different tastes. My understanding is that deer digest their food not with stomach acids but with enzymes. Just as vegetarian humans can become ill from eating meat after a lengthy time away from animal protein, deer are better able to digest what they are habituated to eating. There's one herd here in New Jersey that eats pachysandra, something I never observed or had previously heard of. Magic Circle repellant used to be made of bone tar oils. very effective. Formulation changed to a Thiram based product. No longer effective. Did find Reynardine, sold in Ireland. Weaker bone tar oil percentage, also effective. Stinky, but dissipates to human nose in a day or less. Liquid repellants - try soaking some of those disposable foam paint brushes in the liquid repellant and push them in the ground here and there. For lower growing plants take bamboo barbecue skewers and push them in the ground, sharper end uppermost and where Bambi's nose will reach the sharp point before chowing down on the plant. Caution! be careful when weeding / working around the plants. My experience is that deer become habituated to a single repellant if used constantly. better to switch off every 6 weeks or so. Renew after rain, reapply as plants grow and new growth is unprotected. Judy in western New Jersey where Bambi's mother practically looks in the kitchen window for coffee to go with the salad bar