Jim- This is what is in the CPSC PDF that anyone can download - AluminumWiringFixes.pdf - "However, CO/ALR wiring devices have failed in laboratory tests when connected to aluminum wire typical of that installed in existing homes. The test conditions simulated actual use conditions; no ?overstress? type of testing was used. Further, CO/ALR connectors are not available for all parts of the wiring system (e.g., for the permanently wired appliances and ceiling mounted light fixtures). In the opinion of CPSC staff, CO/ALR devices must be considered, at best, an incomplete repair. Recommendations on Temporary Repairs AL/CU twist-on connector pigtails or CO/ALR devices may be used as an emergency, temporary repair for a failed aluminum termination." Honestly, I don't know if the receptacles and switches will fail or not, and I agree that this is the stuff produced by government. I'm not a barrister, but my point is - from a liability stand point, are we smart for telling people that using CO/ALR rated components is OK when the government is saying it's not?