May 23, 2021 18:32 Updated Follow Call at least two full business days in advance. Remember that the call and service are free, and are required by law. Related articles How can I get trees to plant on my property? I received a letter/postcard offering a warranty or service plan on my utility lines. Should I sign up? If I'm a NIPSCO customer and I switch to a different natural gas service provider, will I save money? How many species of trees are native to Indiana