I just discovered that havaheart makes a motion activated sprinkler.  When the chickens walk past it (presumably to scratch up your spearmint or your dwarf ruellia) it sprays them with a stream of water.  It works great and I am going to order another for my other bet.  I got it on ebay, that's where I found the greatest price.  Enter the key words "motion activated sprinkler"
	
		
			
		
		
	
				
			
	
	
