How can I block crawlers sent bij services such as adplexity.com / whatrunswhere.com ?

Hi all

I would like to block crawling tools such as adplexity.com and whatrunswhere.com . These crawlers seem to be pretty smart and keep indexing media placements (ads). As a ‘services’ they allow people to view the indexed ads and let people view the web pages they link to. The result is that people steal idea’s, concepts and even complete landing page code.

There are several services which claim to ‘cloak’ pages and redirect these bots to dummy pages. They charge a very high fee (200 dollars and up / month) and they refuse to say anything about they techniques or ways they work. Not a single thing.

I was wondering if anyone has any idea of how I could be able to identify those spy tools and then redirect them to a dummy web page, while letting regular users go through to a correct page. Are there any applications, techniques or other ways that I can accomplish this on my droplets ? Any tips would be much appreciated!

Thanks, Lex