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How to completely wipe data in Firefox

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So I was setting up Firefox and accidentally imported data from a different browser than I intended to and I don't know how to remove all the bookmark and auto fill that I had imported. I have tried deleting the Firefox file in window explorer and it didn't work. Is there anyway to completely wipe Firefox clean?

So I was setting up Firefox and accidentally imported data from a different browser than I intended to and I don't know how to remove all the bookmark and auto fill that I had imported. I have tried deleting the Firefox file in window explorer and it didn't work. Is there anyway to completely wipe Firefox clean?

All Replies (2)

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Have you tried the instructions in this article?

Remove User Data and Settings

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There are a few different options. Just to get the full picture:

What do you mean by auto fill? Are those logins (username + password) or other kinds of form field suggestions, or something else?

Did you already connect Firefox to your Firefox Account and populate Sync with the unwanted data?