I have two cats. One Persian, Lily, is indoors only. I have brought in scapes with pods to ripen as well as proliferations to root in vases. Lily has chewed on the scapes themselves, as well as daylily foliage, and has shown no signs of getting sick from either. This has happened on more than one occasion as she seems drawn to whatever I put in the vases.
Our other cat, Stanley, goes indoor and outdoor as he pleases (or when I do). When I'm doing my pollinations, he often lies in the daylily seedling bed and nibbles on the foliage around him. He also has never shown signs of sickness from consuming the leaves.
Our season here is at an end, but I will try to remember next year to write down and send you additional info if requested.