I just read in another thread that catnip make some ferals agressive..I though of putting some Feliway, or catnip by a couple of winter shelters.. we'd like the ferals to make use of them but they prefer an abandoned house or under a porch..they'be warmer in the box though, they sun themselves on top of it though but won't go in.. I thought of Feliway b/c is calming or depends on the cat, specially a feral? Thank-you