My tenant that live below me street level called me that she has a mouse on her unit she also told me she has seen roaches.

I’ve done two pest control in one month since I noticed there were a lot of ants in the back of the house, the first time she called me for the roaches I noticed her unit was not clean, the dishes were not done the trash can was not cover and she had a lot of food everywhere, I told her to make sure she keep everything clean and the food in closed containers. when I followed the line for the ants they were all going to her thrash can she also had a bucket with empty cans, I kicked it accidentally and a lot of roaches came out of it so I told her about it.
Now she call again about the mouse and seen roaches. I noticed now she has the bucket with empty cans inside her kitchen. I looked at her lease and it doesn’t say I’m responsible for her pest control. I would if there would be an infestation to be treated. but I think she should take care of it. before ir become and infestation, am I responsible to get rid of the mouse ? I am a landlord in Oakland Ca.