One of my clients has been being hit with a bot that is a form filler. The bot is called "www.textron.com/testBot" and it filles out forms like crazy. I have tried using a robots.txt file - but since this is one that probably changes name all the time (textron makes highly protected armored vehicles used in Irq) so that's why their name is being used.

I tried:

Code:
User-agent: testBot
Disallow: /

User-agent: www.textron.com/testBot
Disallow: /
but any thoughts as they have received almost a thousand this week.

As a last resort - maybe one of those submissions that use a verify graphic- that is cheap or open source?