pretty much the title says it all. if you are qued solo/duo and you have 1 or 2 more spot(s) for another player, Chances are... they will be a bot with name like this: 5Usa2ea2a, on your team and/or the enemy team as well. Really ruins the game mode IMO.
They ban bots in waves. Just report players you feel are experiencing bot like behavior.
Edit
They do this to prevent bot makers from changing their tactics. If they did it in a rapid fashion, the botters would quickly change their program, and you'd have fewer bots caught.
It's always a little weird, sometimes making it more difficult to win, but bottom line: bot games are there to test your individual skill first. I would think that, even if the bots are feeding and making your game last longer, the benefits outweigh the risks for banning in waves.
I don't typically play bot TT games, but I'll give it a try soon and update this post
Maybe it's time for Definitely not Twisted Treeline.
getting 2x xp boosts and doing ttl intermediate bots is the legit fastest way to level in the game (least 1-30). So of course thats going to be home to the most bots lol.
So either riot needs to adjust ttl XP gains or stop perma banning people so they don't buy botted accounts.
