40 C.F.R. § 158.1736
Lice.
Cite as 40 C.F.R. § 158.1736 (2026)
(a) General. The table in this section applies to human lice. The product labeling claim determines the required test species. The required test species for a labeling claim appears in paragraph (b) of this section. The required performance standards appear in paragraph (c) of this section. (b) Test species. For products making a claim against lice, the required test species for a labeling claim appear in the following table. Table 1 to Paragraph (b) —Required Test Species for Products Making a Claim Against Lice Labeling claim Required test species Lice Testing on one of the following species is required: Head louse ( Pediculus humanus capitis ) OR Body louse ( Pediculus humanus humanus ). (c) Performance standards. For labeling claims against lice, a performance standard of 100 percent is required.