• Can I rely on a Kosher List for products that don't have a hechsher?
• Is there a difference in standards between products that are certified kosher vs. products that are on a Kosher List?
• What is the difference in halacha between Lechatchilah (before the fact) and Bidi'eved (after the fact)?

How does that apply to products on a Kosher List?

Accompanying information is available here