Welcome to the Q&A Forum

Thanks Jane and Lesley for your responses. Great ideas from you both. I think I'll keep the pages but change the content/buying options, as you've both suggested.

I had considered 410s and might fall back on this for historical URLs in the instance that we can no longer retrieve the content.

One of my client sites lists millions of products and 100s or 1000s are de-listed from their inventory each month and removed from the site (no longer for sale). What is the best way to handle these pages/URLs from an SEO perspective? There is no place to use a 301.

1. Should we implement 404s for each one and put up with the growing number of 'pages not found' shown in Webmaster Tools?

2. Should we add them to the Robots.txt file?

3. Should we add 'nofollow' into all these pages?

Or is there a better solution?

Would love some help with this!