Some landing pages don't return a 404 status code (because we already check for those), but they contain words like out of stock, making it a bad user experience and a waste of ad spend.
We'll let you customize the words or phrases you don't want to appear on the landing page.
Some other examples you could monitor for:
Some scripts (like the ones below) can do this, but within TrueClicks, it would work out of the box and at a larger scale: