Well a slide bolt may keep you from locking yourself in but it will also leave the door unsecure while you are in it. That is a bad thing if you are inside filling the feeders and a gust of wind blows open the door and all the chickens get loose.
I use small bungie cords for this purpose.
Screen door springs would be even better, but the repurposed screen doors we used didn't have their old springs anymore.
 
	 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
 
		 
		 
			 
			 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		