If you suspect you have an infestation, look for workers. Carpenter ants tend to come out after dark, so search for them near where you heard rustling in the early morning or late at night. Use a flashlight to scan for carpenter ants in these places. Contact The Pest Control Guy when you notice these crawlers to deal with the problem before it gets out of control! www.shopairdrie.com/thepestcontrolguy/