What I'm about to tell you happened just this year, started in January.
We have had this account since 2007. All dark pergo throughout the house. We have used Bruce on it since day 1 and it has always SHINED. Customer decides she is going to become a cleaner (in her mind) and buys the Bona kit. After we had cleaned 1 time I thought it looked a little dull (we clean every 2 weeks). After the 2nd cleaning I was doing a quality check and I said, "Kristi, I'm not sure why your floor is getting a pearl glaze on it". She said, "Oh, I bought Bona and Miranda (daughter) and I have been using it a lot". So I took her over by the front door and pointed towards the back of the house and said, "See how dull and glazed over it looks now?". So she showed me where she kept the Bona and I took it out to the trash can and threw it away and told her the next time she gets any smart ideas to call me first so I can tell her NO!!
Now I know when I go in to houses and they have a dull glaze what they've been using. In my company we have certain products we use and customers do not get a choice. They pay top dollar for ME to be the professional and make those decisions.
As for Windex...... wow, I thought they stopped making that crap years ago! Why would anyone buy that in 2015?