People with real Christmas trees have been warned to look out for a mass growing on their tree, resembling a pine cone.
Bizarre on Female First
This deceiving mass is actually praying mantis eggs, which contain about 100 to 200 bugs and can hatch inside homes if left untouched.
A man named issued the warning on social media last Christmas and his message has been shared once again this year.
More than 89,000 Facebook users have shared the post.
Daniel Reed wrote: ''If you happen to see a walnut sized/shaped egg mass, on your Christmas tree, don't fret, clip the branch and put it in your garden. These are 100-200 preying mantis eggs!
''We had two egg masses on our tree this year. Don't bring them inside they will hatch and starve!''