Below is further empirical proof to my assertion that high value Bangladeshi taka can withstand frequent cleaning.
Behold, my lucky 500 taka note
It lives in the coin pocket of my favourite jeans. If you look closely, you'll notice a tear below the 500. That tear has always been there.
No amount of washing can increase the size of that tear. If only rickshaw wallas were paid with 500 taka notes ($8) instead of 2 taka notes, then they could safely wash their money, and be rid of all that pesky bacteria!