Get some BSFL from here
www.symtonbsf.com feed 20-25 on top of his salads - drop them on top in front of him --- if he really likes them he will gobble them down and come out undigested so that is why I suggested that amount you can always feed more if you want - feed those first thing in the morning they make a good compliment to your main staple feeder - they are great for babies -
Nutrition Content ignore the kale info it is outdated and a great staple feeder
Amazon.com
you will need a bowl similar to this to keep the BSFL in and they do work good for small roaches as well