Infected with eDeals extension (CouponDropDown) adware

I am at my wits' end with recurring adware on my PC. I have been perusing the Internet for suggestions and recommendations on how to purge from my computer the adware associated with the eDeals extension or the PirritSuggestor extension. I've had this problem off-and-on for the past few months; every time I think I've successfully rid myself of the adware, it comes back again in another form and is harder to find.

I've tried uninstalling the program (named "SweetPacks") from my computer, but...

Infected with eDeals extension (CouponDropDown) adware