The confectionary giant, Cadbury, is changing the packaging of its Dairy Milk bars in India following allegations that some were found to have insects in them.
Around a million bars are sold every day in India
Company officials told reporters in the western city of Mumbai (formerly Bombay) that Dairy Milk bars would now have an additional wrapping to seal them from any outside contamination.
Cadbury says the new packaging will cost more than $3m but it will not increase the price of its Indian products.
Public health officials in the western Indian state of Maharashtra seized Cadbury chocolates in October last year when insects were allegedly found in two different samples.
Cadbury denied that it was to blame, saying the problem was almost certainly the result of the way chocolates had been stored by a retailer.
It said it had investigated all the samples that came out of its Bombay factory and all were of good quality and free of any trace of infestation.
The company supplies 650,000 retailers directly and indirectly and is India's leading chocolate company, selling more than a million bars there every day.