That's interesting that you have animals messing with the garlic. What you can do make yourself a homemade pest deterrent and spray it. Periodically on the plants and around them every week or so especially after rain. To make them repellent you need some Dr bronner's Castile soap, mint and cinnamon oil/flavoring the hottest hot sauce you can find and a little egg whites. The Castile soap only needs about a half a teaspoon per gallon and you can play around with the different ratios of oil hot sauce and you only need I think like a tablespoon of egg whites mix them up in a gallon and then let it sit outside in the warm to get really really stinky. Spray that and it'll keep everything bugging your plants away but it's not difficult to wash off when you want to use the food you're growing. Buying all that stuff one time you can make probably 20 gallons of it over the course of a summer or two if you need and it's their cheap compared to the stuff you buy at the stores. That's all the stuff at the store is really made out of two if you look at the ingredients it's just the oils and then eggs that they allowed to ferment.