I would highly recommend some. They are beneficial to a lot of different creatures. I dug a fairly large waterhole/small pond 6 ft deep. The first year it was getting pounded by the deer. I strongly believe that the are attracted to something in the freshly dug soil. I have lots of lowland the holds water here and there but they love the dug waterhole the best. The animals have a couple of good trails leading to the ponds but the usage is nowhere near like when it was first dug. Its cool just to see everything using it.