We probably don’t realize what they do but we probably couldn’t live without them – the U.S. Custom and Border agents. Every day they intercept bugs and all kinds of things we don’t need in the U.S. “Custom and Border Protection intercept unwelcome pests“.

In fiscal year 2012 — from Oct. 1, 2011 until Sept. 20, 2012 — U.S. Customs and Border Protection officers and agriculture specialists in South Texas intercepted 13,553 pests. They also intercepted 22,518 quarantined animal materials and 100,338 quarantined plant materials, according to the agency.

Notice, that is just one border station and kind of scary when you really think about it. Arizona Game and Fish have an action plan in place for mussel movement on boats.