Setting up Wipeout for Shopify
UPDATE: WIPEOUT is no longer required - The stock sync app will handle this functionality.
Wipeout is a $7 a month app for Shopify that will automatically hide out of stock products and un-hide them when they come back into stock. Keeping your store front clear of out of stock messages. A free alternative to wipeout is to add a condition to each collection to show only where QTY is greater than zero. However this does not clean up your search results.
Download your guide to Wipeout here