The idea of using bot is that you automate your account. There are many different parameters that you can set and if set correctly you could expect to see like food percentage of followers coming from the country that you want. The idea is to mix your account with real people. Mostly by doing f/u method etc. But anyone can follow you on twitter so you might get Indiat and Middle East follwoers even if you don't want to. Also depends if you account is private or public etc.
Choose which bot you want to use and look for prices at their website.
