Hello, I’m the manufacturer’s rep for Titan Green. It’s the world’s greatest degreaser and the reason I started working for Titan nearly 10 years ago. It’ll do a great job of cleaning anything greasy, sooty, or just plain dirty. The reason you’re seeing a residue is 2 fold. First, you may have mixed it too strong. We have many window cleaners that rely on Titan Green for pre-cleaning windows in Chinese restaurants (near the woks) and other greasy spoons (not to mention nicotine buildup). And second, it sounds like you’re trying to replace your GG-4 with Titan Green, but Titan Green is meant for cutting grease, not cleaning glass; so pre-clean uber-greasy/sooty areas, then proceed with GG4 for final washing. Also, when it comes to adding an extra piece to your business, consider cleaning the soot from your customers’ fireplace mantle. Titan Green makes it vanish with no work at all.
I add enough Titan Green to my solution – when required – to [I]efficiently[/I] cut nicotine or grease. That’s still enough to leave a residue.
No residue is left when I use pure water and a waterfed pole.
I don’t, however, clean with a Titan Green solution (nor did I state as much.)
You’ll note that I mention utilizing a segregated tool set for final cleaning. That includes a fresh GG4 (or Ecover Lemon & Aloe) solution, washer sleeve, and squeegee. I’ve also posted in the past about using latex gloves when cleaning nicotine-laden homes due I typically get a headache.