My brother had the same problem. He took off his glasses, laid his head on the table and put the drops in his ear. When it started to burn, he realized that he had mistakenly put Echinacea (sp?) in his ear.

The funny part is that my OTHER brother had an eye infection at the same time. He took HIS glasses off to put his antibiotic drops in his eye. When THAT started to burn, he realized that he had mistakenly put Binaca in his eye.