You can use any essential oils to clean up scissors which have got sticky from all that double sided tape, foam etc.
Put a couple of drops on a tissue and wipe over the scissors, the glue will melt away. I've tried lavender, tea tree and eucalyptus - all work well but lavender smells the best. You can get these oils from Asda and Boots.
You will need to wipe over the scissors with a damp cloth and also wash your hands after so you don't get the oil on your cards.
Happy Crafting,
Ali xx