Don't forget about the daffodil it also is part of the lily family, and that's how I lost my cat. I never grow them in the yard or bring them into the house anymore
There are more humane ways.You can buy claw caps from your vet. They are like fake fingernails you glue to the nail and they cover the nail and then are shed off when the cat sheds his outer nail. No more scratched furniture and they can still climb trees and scratch posts.