I tried a container herb garden on my deck and it was attacked by squirrels and one of the stray cats that seem to like hanging out in my backyard. Is there anyway to keep those pesky critters away? I dont want my herbs ending up as a litter box. Id like to take em inside but don't know if I have enough still for a window box or even if I want one with two little babies and a 5 yr old running around. Plus my deck is the sunniest spot I found.