They should appear naturally. As a matter of fact, if you have LR you probably have some now. The pods are hard to see, very tiny. The worms will eventually make themselves known.
Try a flashlight after lights out or if you have led's you should be able to see. The worms will come out of the LR. Out from under it. From inside empty hermit shells...
If you feel inclined to stock pods, it won't hurt a thing. This is fish food and entertainment. Literally sustinence if you have rock dwellers like goby's or blenny's. Several variety of tang and butterfly might enjoy them, as well.
IMO, be careful what you wish for with the worms. Or just be patient, they will come. No need to stock.