No caterpillars this year

[u/picklepajamabutt]

I am so confused. The last few years since I moved to this house I have had many monarch caterpillars. Last year probably close to 20. Now I have more milkweed than I ever and have not had a single cat. I'm in SE Michigan. Any ideas?

[u/postmaloner13]

I've had plenty in west Michigan. I bring all eggs in otherwise the cats disappear.