Hazard Class 6: Toxic Substances

Type	Common Examples	Domestic		International	Domestic Mail		Maximum Amount Permitted in Mail	Additional Information
Type	Common Examples	Air	Surface	International	DMM	PUB 52	Maximum Amount Permitted in Mail	Additional Information
Poisons	Tear gas (except those containing oleoresin capsicum	N	N	N	601.10.16	346.221b	601.10.16	All irritants are prohibited.
Poisons	Flea collars, cyanide, pesticides & herbicides	N*	N	N	601.10.16	346.211	601.10.16	Must check specific materials in Appendix A of Pub 52. ORM-D or limited quantity only.
Infectious Substances
Noninfectious Specimens	Blood, urine, saliva, stool	Y	Y	Y***	601.10.17	346.233	601.10.17	Must be properly packaged.
Biological & Medical Materials	Used sharps, medical devicesl	Y	Y	Y***	601.10.17	346.12	601.10.17	Items must be properly packaged for mailing; some require approval before mailing.