Help... I have grown some winter pansies from seeds and out of 20 plants I now have 3 left. Thought it was slugs and despite slug pellets and daily slug/snail forages was horrified to see groups of leaves under my trays. My husband thinks it might be mice using the leaves in nests. The leaves have all disappeared. All of my other young plants have slender leaves (wallflowers and lupins) so may not be cosy nest material. Any ideas?