Boric acid powder.
FIRST AID INSTRUCTIONS FOR ACCIDENTAL EXPOSURE: If on skin: Immediately flush with water for at least 15 minutes. Remove contaminated clothing. Launder contaminated clothing before reuse. If in eyes: Flush with large amounts of water, lifting upper and lower lids occasionally. Get medical attention. If swallowed: Immediately drink two glasses of water and induce vomiting by either giving Ipecac Syrup or by placing finger at back of throat. Never give anything by mouth to an unconscious person. Get medical attention. If inhaled: Remove to fresh air. Consult physician if irritation occurs.
Do not use in eyes or as a dusting powder on the skin. Avoid breathing dust. May cause irritation to eyes, skin and mucous membranes. KEEP OUT OF THE REACH OF CHILDREN. In case of accidental ingestion, seek professional assistance or contact a Poison Control Center immediately. If emergency assistance is not available, see first aid instructions.