I have a MacBook Air and iPhone 7. I have a Dell desktop at work, and for some reason my MozillaFirefox bookmarks from my work PC are showing up on my Apple devices and I would like to remove them. At work I use Firefox, IE, and Chrome. On my Apple devices I use Safari and Chrome. I assume iCloud might be the problem here. I am wondering if (since I use it on all three devices, it is somehow syncing them. The shortcuts from my Firefox toolbar show up in my favorites on my Apple devices, and the bookmarks from my Firefox bookmark menu show up in my Safari bookmarks folder.