This paper reports on key informant (KI) and focus group interviews exploring the relationships between methamphetamine small toxic lab (STL) seizures and related activity, and methamphetamine precursor laws. The primary purposes of the KI and focus group interviews were to: 1) examine KIs’ perceptions of the impact of their state’s precursor laws; 2) explore KIs’ perceptions of the organizational and procedural facilitators and barriers to successful implementation of the law(s); and 3) evaluate KIs’ perceptions of the relative importance of various precursor law provisions. Research questions included: 1) What were KIs’ perceptions of the impact of their state’s precursor laws?; and 2) What were KIs’ perceptions of the organizational and procedural facilitators and barriers to the successful development and implementation of the law in their state? This paper is the qualitative analysis companion to (1) a documentation of state methamphetamine precursor laws/regulations in effect as of October 1, 2005 by O’Connor et al.1; and (2) a paper reporting on quantitative analyses related to methamphetamine STL seizures also prepared for the National Institute of Justice by McBride et al2.