I do the same thing. I have around 6 comments per post. Usually around 3 are natural and around 3 are bots. I upvote the natural ones so that they're above the bots. This improves the appearance of my comment sections a lot.
I used to give a lot of votes when the votes were worth more, but now that they've been reduced, I'd need to use at least 60 or 70% to reach the dust minimum.