Yeah, I get you. But unfortunately no. They don't use the same authentication, they just connect information on the other end. It's not like the sites that allow you to sign in by using another account. You sign in Mastodon with a Mastodon account an Lemmy through Lemmy. I can't use my Kbin account to sign into either of those--I just have a separate Mastodon account.
There is a misunderstanding here. The fediverse can communicate with each other, but you can't sign in with one anywhere. Consider it like an email. You can't use a Yahoo email to sign into a Gmail account, but you can send emails to anyone, regardless of sharing the same @.
If you have (or know someone who has) dogs? Get some excrement. Burying it in the mole hills tells them a predator is there and to burrow away. There used to be moles where I live, but bringing in dogs have moved them out of the area. The yard has been mole free for years.
Depending on where you live, another alternative is flushing them out. Use a hose and flood the entrances which also makes them move away. However, with water shortages in a lot of places, I'd recommend the first option.
Unfortunately it's only painful for the rest of us.