[15155]

Sounds like one just needs to coat absolutely everything in their places, neighborhoods, businesses, etc. in TPPO and the like to change the noise floor.

[eesmith]

Looks like Sigma-Aldrich sells 100g of 98% pure triphenylphosphine oxide for about $100, see T84603 at http://www.sigmaaldrich.com/catalog/product/aldrich/t84603 .