You can use any of the abovementioned natural squirrel repellents if you want to deter squirrels. This includes anything that has to do with strong scents because the squirrels will simply smell the garden and run away. You can also install motion-activated sprinklers to keep them away, or you can plant squirrel-proof flowers. Removing any food sources from the garden is another great way because the squirrels won’t have any reason to come back. Ultimately, you can use live traps — they will trap the squirrels without harming them so you can simply relocate them far away from your home, just make sure that you bring them some water and food!