Neighborhood cat 'marking' our deck
This is probably going to sound like a really stupid question but here goes.
This morning I wake up to find something wet all over the bottom side of my grill cover, which had dripped onto my (brand new, freshly stained) deck. it turns out it's animal urine - ugh. My strong suspicion is that it's a neighborhood cat who i always see in my yard (we woke up one night a few months ago to it having a 'turf war' screeching at another cat which had tried to move in on it - the cat had apparently claimed ownership of our construction-woodpile and was fending off an intruder.)
Anyway, my own housecats like to hang out at the screen door where this "marking" happened. After cleaning it up I got to thinking, is there any way to discourage the neighborhood animals from marking my deck again? I don't care if they roam in my yard, but after spending so much time and money on putting our deck together I'd like it to stay stain-free for a little while! :)