Ingestion: Products containing Optibor are not intended for ingestion. Optibor has a low acute toxicity. Small amounts (e.g., a teaspoon) swallowed accidentally are not likely to cause effects; swallowing amounts larger than that may cause gastrointestinal symptoms.
Inhalation: If symptoms such as nose or throat irritation are observed, remove person to fresh air.
Eye contact: Use eye wash fountain or fresh water to cleanse the eye. If irritation persists for more than 30 minutes, seek medical attention.
Skin contact: No treatment necessary because non-irritating.
Ingestion: Swallowing small quantities (one teaspoon) will cause no harm to healthy adults. If larger amounts are swallowed, give two glasses of water to drink and seek medical attention.
24 Hr. Medical Info. Service . . . (661) 284-5200
http://www.hillbrothers.com/msds/pdf/n/boric-acid.pdf