Bing Bots

Looking for advice on how to reduce the number of Bing bots at visit my forum at one time.
It's usually over 10 at any time, were Google etc only ever have one crawling.
I've tried using their webmaster site but that didn't have any effect and also using the htaccess.

Sure I read somewhere that this could slow things down?

Hello ,

You can delay them via robots.txt file

Mert, sorry. Meant robots.txt file instead of the htaccess.
I have this in it,

User-agent: Bing
Crawl-delay: 60

Will this make a difference, hasn't so far or do you recommend something else.

Any idea as to why the Bing bot behaves in this way compared to the Google bot? I would assume that it is just consuming a site's bandwidth by crawling a website with a lot of bots at a given time.

However, limit the Bing Bot on your robots.txt file, and this should do the trick.

crawl-delay is the only setting available, and even that is merely a suggestion. Ultimately, the bots will do what they want to do. If they are bringin down your server, perhaps you should consider adding more server resources as even 100+ extra anything shouldn't bring you down. What happens if someone drops a link to a thread of yours on reddit, or some other super popular site? You don't want your server to crash and lose out on all that traffic.