Hi @caster-troy
Welcome to the Auth0 Community!
I would recommend to review these posts, one about Clearing Cookies on Logout and another one about the Delete cookie on logout - webAuth.authorize() function on Android.
You can also attempt to redirect the user to your /logout or /logout?federated when invoking the logout function in your application. Alternatively, you can set your tokens to expire sooner, however this might not be ideal for your use case.
Otherwise, I believe the Android SDK does not offer to clear the browser cookies directly at this time. You can raise an inquiry with the SDK team on the GitHub repository if necessary regarding the matter.
If you have any extra questions or the articles above were of any help, do not hesitate to let us know and leave a reply on the post.
Kind Regards,
Nik