I have 2 barn cats and noticed that they are digging around the run fence about 4 inches and urinating in the hole.  The fence is dug 12 inches down around the perimeter so I don't think they are digging to get in.  Any ideas from the cat whisperers?
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		
 
 
		 
 
		

 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		