From March through August 1960, the CIA had plans aimed at undermining Castro and his appeal to the public by sabotaging his speeches.[19] The schemes thought up were aimed at discrediting Castro by influencing his behavior and by changing his appearance.[20] One plan discussed was to spray his broadcast studio with a compound similar to LSD, but was scrapped because the compound was too unreliable. Another plot was to lace a box of Castro's cigars with a chemical known to cause temporary disorientation. The CIA's plans to undermine Castro's public image went so far as to even line his shoes with thallium salts which would cause his beard to fall out.