Which product is described as least toxic to humans?

• A. Methyl chloride
• B. MULTIHION
• C. Ortho boric acid
• D. Oil soluble formulation

Answer: (B)

When judging how toxic a product is to people, the overall risk depends on both the active ingredient and how the product is formulated—factors like volatility, skin and eye irritation potential, and how easily it’s absorbed through the skin or inhaled. A product with low acute toxicity, low volatility, and a formulation that minimizes exposure will generally be the safest for humans when used as directed.

MULTIHION fits this pattern. It’s designed with ingredients and a formulation that reduce the likelihood of harmful exposure and have a favorable safety profile for humans, so its potential for acute harm is lower than the others listed when used properly.

In contrast, methyl chloride is highly volatile and can be readily inhaled, leading to significant toxic effects; ortho boric acid, while relatively low in toxicity, can still be hazardous if ingested and isn’t risk-free; an oil-soluble formulation typically involves solvents that can increase skin absorption and inhalation risk. Taken together, MULTIHION presents the smallest risk to people under normal use.