If you use hosta plants, I predict they will last about 2 days, tops. They just mow them to the ground. We dig out some huge clumps we need to be rid of or split and they do it for us, pecking the roots, also. I plant a seed feed in a fenced out area and then when it is 2-3 inches tall, I let them at it. 2 days, tops, and it is gone. They just love it.