Is there such thing as industrial strength bleach?

Question

I was having a talk with my co-worker about a report that some bleach that we use in housekeeping department was stolen over the past month. I said to him, "why would someone want to steal a gallon of bleach? It only cost like a dollar or something, why would someone risk getting caught and lose their job over a dollar bottle of bleach?" (Mind you, this is only some generic gallon of bleach we're talking about). He said to me, "It was some industrial bleach that they use and its more stronger that regular bleach". So I said to him that there was no such thing as "stronger bleach", it's all the same. To make a long story short, I decided to go to yahoo answers to see if anyone could prove this theory. Maybe i was wrong about this...
I have never heard of "ex-strength bleach" before, I though they were all the same. I thought that industrial bleach meant that it was packaged in a way that you got more because you use more of it in bulk. Also my co-worker is not all that bright...

Answer 1

Yes there is. Check out Smart & Final.

Answer 2

Yeah, there is some kind of industrial strength bleach. My parents used to buy big containers of it and used it in our swimming pool among other things. I stuck a blue denim jacket in a mixture of it once and it turn it white + made holes in it.