I believe Ivermectin kills bots. Ivermectin is one of the very best (and now the cheapest) dewormer you can buy. I remember when I was paying close to $20 a tube, and now you can get it for $2.00 a tube.
I would wait a little while (I'm not sure how long, maybe a couple of weeks?) and then deworm them again with Ivermectin. There are also some good dewormers that are ivermectin based but also feature another ingredient that is supposed to kill tapeworms too.
Maybe some other folks can offer more clarification.