To Stop Squirrels from digging in your pots
I read somewhere that placing rocks on the soil around your plants in pots will stop squirrels from digging in them and it works. Most any large size gravel will do; I find the limestone rocks similiar to what is used on railroad tracks works very well. Try to get good coverage because if you leave any large gaps they will dig there.
This works so well and I have been adding so many large pots and planters that I am running out of rocks.
Hope this helps