There should be road signs like that in Lobau national park.
As slowly (and sadly) but inevitably spring is making place for summer Lobau (especially Upper Lobau) is crowded almost like a park, with naked adults sunbathing in orchid meadows, kids running around crying and disturbing all animals except those which are hunted by dogs running around freely, despite signs saying that they should be kept on the leash.
But ticks really are guarding places like this - people only don't know about it, thus there should be put up signs:
"Beware! This specimen of Anacamptis coriophora is guarded by the meanest ticks you've ever seen."
