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10 January 2015 Last updated at 07:53 GMT
A farm in Dorset have got a trusty group of 25 goats that love to eat them.
The goats eat all of the greenery and leave just the bare branches.
The extra food is good for the animals and helps to keep them full up over the winter months.
Watch Hayley's report to find out more...
Goats are being used as a handy new way to recycle unwanted Christmas trees.