In the last week my one of my two kitties have peed on 3 of the blankets that I have either slept on or under, I have washed them but they still smell of urine, I have heard of using vinigar but not sure how to use it. I think they maybe doing it because I am about to go into labor (but not sure). Thank you in advance for any input on how to get the smell out of my blankies.