I found this on the internet:

QUICK FIX 4.0 replaced formula 3.0 on Dec 1, 2003. People having the formula 3.0 are encouraged to replace the product for free replacement.

Wow, almost 5 years ago!
suzieque Reviewed by suzieque on . QF and QF 4.0 I see alot of people reference QF as QF 4.0. Is it safe to assume that there's a QF 3.0 (and below) out there? Just thought I would check as I am ordering some QF to keep on hand in case of an emergency. Thanks so much! Rating: 5