ongoing monitoring and re-baiting is a critical aspect of sentricon’s effectiveness. without proper oversight, re-infestation from neighboring foraging colonies can occur. however, such re-infestations have not included any members of the original colony. long-term studies have shown that by implementing the recommended service frequency, approximately 60% of the colonies are eliminated during the first quarter, approximately 75% of the colonies are eliminated after the second quarter, nearly all colonies are eliminated within a year of the initial baiting and all colonies are ultimately eliminated. sentricon touts that it's used by independence hall, the statue of liberty, and the white house to keep our historical landmarks termite-free.