If ants keep showing up around your home, a morning cup of coffee could already have a surprisingly simple solution. Used coffee grounds may be a cheaper and more simple way to help discourage ants without relying on store-bought methods. Here's what to know According to Hunker, leftover coffee grounds may make a home or garden less inviting to ants, even though they are not meant to kill the insects. A strong coffee smell may be enough to put a…