Flower buckets

[peanut]

Much to my delight I have discovered a big stack of flower buckets that I have used for Toms etc, trouble is lots of them are stuck in two's and I cannot, for the love of me, get them apart!
Do any of you have a magical way of getting them to separate? I'm driving myself mad

[Bren In Pots]

Wearing wellies or crocs will give you a bit of grip on the lower buckets that seem to help free them.

[ameno]

Get a wide, flat piece of strong metal (like a file, or the back of a heavy, sturdy knife), insert it between the rims of the two buckets, and twist. It should lever them apart fairly easily.

[Jungle Jane]

Try some soapy water,can they be used in twos to make it easier?

[peanut]

Did it!!! A metal scraper as per Ameno's suggestion.
Thank you all! That was so frustrating.