We’ve all heard of the endangered species act that protects wildlife on the brink of extinction. This is just the opposite.

Last week, the U.S. Fish and Wildlife Service declared four snakes “injurious wildlife,” effectivley clamping down on their travel visas.

Making the list of bad actors were the reticulated python, DeSchauensee’s anaconda, green anaconda and Beni anaconda.

“Large constrictor snakes are costing the American public millions of dollars in damage and placing at risk 41 federally and state-listed threatened or endangered species in Florida alone,” FWS Director Dan Ashe said in a prepared statement during an event to announce the rule in Florida. “Today’s action will help prevent humans from contributing to the spread of these snakes.”

Beni and DeSchauensee couldn’t be reached for comment.

“The reticulated python and the green anaconda, considered the two largest snakes in the world, are traded commercially as pets. Some of these powerful snakes have been intentionally released into the wild, while others escape from poorly secured enclosures,” according to a FWS statement.

Once in the wild, they reek havok on the ecosystem, staying out all hours of the night, hanging out with the wrong sorts and gobbling up pet terriers.

Most people who own any of these four species of snakes (as in, those that haven’t escaped) will not be affected by the regulation, according to the FWS.

The action bars the four species from entering the United States and prohibits those already in the country from traveling from state to state. The move will be published in the Federal Register on March 10, and it goes into effect 30 days later (which is March 40, by my calculation). 

So, if you want to take your invasive non-native constrictor on a holiday, now is the time to do it.