help

[izzy]

my 5 month old puppy goes potty when she feels like it and where ever she feels like it. i crated her until she was pooping and peeing inside the crate. sometimes she wont go in the house if she is not crated and sometimes she does. she will be okay for 4 hours in the crate but when i am gone 8 hours i come home to a mess. what can i do