aren't glycol butyl ethers harmful?

Ziggy's cat was poisoned by professional carpet cleaning

What happened to Ziggy's Cat  and These two cats  (links)

It took me 10 days to get a written copy of the Material Safety Data Sheet for Clean Shower.  There were no ingredients disclosed.  But there was something obviously health hazardous to have the warnings that would go with some kind of glycol butyl ether.  I want to know which one and how much.

Clean Shower written MSDS p 1-3 pdf  #2 No ingredients disclosed

#8 must have ventilation .. EYE PROTECTION (wear splash-proof chemical safety goggles) & PROTECTIVE GLOVES  (Impervious, rubber or neoprene, gloves) OTHER PROTECTIVE CLOTHING & EQUIPMENT (Wear impervious protective clothing; eyewash facility is recommended in work area)

Clean Shower written MSDS p 4 pdf

See p 1 #2 no ingredients disclosed 

See p 2  #8 ... warnings *

Compare to this glycol butyl ether:

16. Other MSDS Information on 2-butoxyethanol

NFPA Ratings: Health: 2 Flammability: 2 Reactivity: 0
Label Hazard Warning:

DANGER! HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CAUSES EYE IRRITATION. AFFECTS CENTRAL NERVOUS SYSTEM, BLOOD AND BLOOD-FORMING ORGANS, KIDNEYS, LIVER & LYMPHOID SYSTEM. COMBUSTIBLE LIQUID & VAPOR. MAY CAUSE IRRITATION TO SKIN AND RESPIRATORY TRACT.

Says the EPA / CA joint janitorial study:  "Glycol alkyl ethers are commonly used as solvents. 2-Butoxy Ethanol is one of the most toxic of the glycol ethers.  You should use products containing butoxyethanol with extreme care. It is a poison that can easily absorb through your skin to harm you. When working with it, always wear gloves and goggles and be sure the you have enough ventilation."  More probably exposure is vapors in one's eyes ... but NOT ingestion as is suspected by some MSDSs

Glycol BUTYL Ether  should be 'on the list' of most probable cause of Autism (check links)

The EGBE list  What do glycol butyl ethers do? *