Overview. Squirrels may be cute critters but not when they are rummaging through your garden, stealing your hard-earned produce.Squirrels are real nuisances to all vegetable growers, but you can use humane methods to discourage these pests. The keys to keeping a pesky squirrel out of the garden are persistence and variety.Keep the squirrels on their toes by using a repellent and introducing a new one every two weeks.quirrels are real nuisances to all vegetable growers, but you can use humane methods to discourage these pests. The keys to keeping a pesky squirrel out of the garden are persistence and variety. Keep the squirrels on their toes by using a repellent and introducing a new one every two weeks.