Non Renewal Notice

[Tyler U.]

I have a tenant who's lease is up in a month and a half on 6/30. I am not going to renew her lease because she has a new habit of paying as late as she can without penalty, a boyfriend living there who is not on the lease and a dog and two cats who are also not on the lease. What notice do I need to give here and what is the best way to avoid conflict (I presume she is not going to be happy about the notice). The property is in Tacoma, WA. Thanks in advance for any help.