Using red and green lights, Kristina Green of Maricopa spelled out the word "ditto" and made an arrow pointing toward her neighbor's home.
KNXV-TV reports that Green's display is made of around 600 lights. Her neighbor's set-up has about 16,000 colorful lights.
Green has created a Facebook page for her "ditto" sign.
Last year, a family in Beaverton, Ore., also erected the word "Ditto" with an arrow on the side of their own home toward a neighbor's house as part of an online movement.