Too — (adv.) also, as well, in addition.
We don’t usually use too in negative clauses; we use either instead:
- I don’t like that kind of stuff.
- I don’t like it either.
That said, here’s my concern: I’ve heard a native speaker from the Lake District (in the UK) say “I won’t do it and she won't do it too.”
When asked if that's how he usually phrases such sentences, I got an affirmative answer. This then reminded me of John Lennon’s lyrics to his song “Imagine”, which I had always thought must be wrong:
Imagine there’s no countries
It isn’t hard to do
Nothing to kill or die for
And no religion too
Is it grammatical in the UK (or in certain regions) to use too instead of either in such sentences?