Stop in for a cup of coffee

When I was at a Pharmaceutical company back in the late 90s, they had a tough drug substance that would stain surfaces and was hard to remove. It would flouresce under black light so you could see that it was being tracked around the facility. They tried every kind of cleaner they could think of and nothing worked.

I finally said “I know how to clean it”...and out of desperation they said ok, give it a try.

I brought in my bottle of 409 and Shazam! Cleaned up every bit of it. They were stunned.

After that, every lab in the company had a bottle of 409 in it.