I agree about the crates. I also thought it was cruel at first glance, but researched it and found it to be a great tool that has saved many dogs' lives. However, I really dont think the prong collars can be compared. I've researched those as well and still have not changed my mind. Also, if there are better alternatives, why not use them? The crate is a very positive method, where the prong collars are not.