I don't know, but the youtube videos would indicate they're completely turned on by curtains and plants
(
RompaStompa Stick it up your jumper, Sun 15 Feb 2015, 13:50,
Reply)
Here's a nice one -
https://www.youtube.com/watch?v=0wylAGmm_oE
.
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RompaStompa Stick it up your jumper, Sun 15 Feb 2015, 13:52,
Reply)