Scientists have developed a cheap and easy cloning method to let technicians create cloned embryos with gear that could fit in a trailer and costs only a few thousand dollars, New Scientist magazine reported on Wednesday.

“It’s so much simpler than anything we are doing today, it’s dramatic,” the British science magazine quoted Michael Bishop, ex-president of U.S. cattle-cloning company Infigen as saying. “It’s a huge step toward roboticizing the whole process.”

Cloning advocates say it can be used by farmers to preserve the lines of prized livestock, and by protection groups to save endangered species. But opponents worry that cheaper and easier cloning could hasten the day when humans try to clone themselves.