I was told many years ago to never use Bona because it would create white streaks on the floor, which would be impossible to remove. Was told by the person who sold me the flooring to only use only water with no vinegar.

Windex Original formula (with the ammonia) will most likely do the trick. Laminate finishes do VERY WELL with Windex. I've used it on finished furniture, hardwood, cork, laminate, vinyl, etc. You'll be fine.

First things first: Your cleaning schedule. I'm going to bet this floor is being over cleaned (yes...there is such a thing). With rigid floors, the most important thing is sweeping. Or vacuum with a unit that does NOT have a beater bar (just suction).

Here's your cleaning schedule that you will want to take up as a regular habit:

1. Sweep 1-3x per week (or vacuum...either way)

2. Damp mop (water ONLY) 1/week. Damp means so little water the microfiber mop feels 'dry'.

3. Damp "clean" = 1-2x per MONTH. A cleaning product such as water and vinegar is just fine. It should be a 20:1 ratio (20 parts water to 1 part vinegar...some people will use a small bucket of HOT water + 1 tablespoon of white vinegar = just fine).

4. For tough situations (like dried spaghetti sauce) you can use the Windex as a treatment of the area.

***Do NOT use wet swiffers!!!!! In fact the dry swiffers leave behind 'wax'. That wax, over time, can cause build up as well (weird but true).

The OVER USE of cleaning products AND the mixing of chemicals (vinegar vs. Bona cleaner) have always caused 'build up' like you are showing in your photos. Relax. Breathe. You are doing fine. Build up can be reversed....with a mild 'stripper' like Windex.

Remember: build up is caused by too much cleaner being LEFT BEHIND. Water EVAPORATES but dirt/cleaner does NOT. They stay behind. Over cleaning leaves +++cleaner. And then mixing in vinegar with Bona and you get the one chemical (vinegar) grabbing on to the other cleaner (bona) to create weird looking spots.

The fix: use a mild degreaser/stripper like Windex to remove the issue...and start again. Windex works well because it has a HEAVY concentrate of alcohol. The alcohol evaporates VERY quickly meaning your laminate floor (which HATES water...hates, hates, hates, hates water) will not have an issue with being 'too wet'. Which is another reason to stay away from 'over cleaning' these floors.

Good luck. Tell us what worked.