Went into Firefox settings>privacy>cookies>manage data. Deleted all cookies. Logged back into a couple sites that keep me logged in. So far no safeframe.googlesyndication cookies from any site. Added note to original post, CCLeaner would delete the safeframe. googlesyndication (sfgs)cookies when I would do a cleaning, then instantly they would just reappear. These sfgs cookies never showed up using Edge browser. After searching more about these sfgs cookies I will guess I may have accidently clicked on an ad on 1 of the sites that could have spread to any site I would go to. I did find a search that suggested restarting in safe mode then deleting a sfgs folder. Have not done that yet. Any additional info or experiences welcome!

Current Firefox version partition cross-site cookies to prevent websites tracking you, that might explain why you have that many cookies for a specific domain.

• https://support.mozilla.org/en-US/kb/total-cookie-protection-and-website-breakage-faq
• https://support.mozilla.org/en-US/kb/introducing-total-cookie-protection-standard-mode

CCleaner probably doesn't know about their origin, but merely sees some cookies.

• https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
• https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection
• https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track