OH MYYY!!!! Andrea, and you tell this NOW??? ROFL!!!!!!! I have been wondering what kind of boots these freaking snails had in my garden LOL !  And now you tell me,  they are actually eating the calc off the windows. Now i better understand the patterns. 

Now they will be really HUGE with big Fancy houses LOL! OK, as long as they dont creep through the open window and eat my plants, its ok :)  Thank you Andra. I had a really big laugh here :DDDDDDDD