The pupae of some species of ants are the basis for the Mexican dish called 'escamoles'. They are considered a form of insect caviar and can sell for as much as $40/lb In areas of India. Throughout Burma and Thailand, green weaver ant is used as a condiment with curry and an addition to a salad called 'yum'.
Fels-Naptha, modern packaging on kitchen counter. Fels-Naptha is an American brand of bar laundry soap used for pre-treating stains on clothing and as a home remedy for exposure to poison ivy and other skin irritants. Fels-Naptha is manufactured by and is a trademark of the Dial Corporation, a subsidiary of Henkel.t is intended for the pre-treatment of stains by rubbing the dampened product on a soiled area prior to laundering. The manufacturer claims it to be most effective in removing chocolate, baby formula, perspiration, and make-up.
It could be a couple of things. Although I don't use bromine, but use Bacqua spa, brown foam can build up around the edges due to body oils, lotions, perfumes, even shampoos and conditioners, etc. It can also be the mineral content in your water. If there is a high iron content it too can cause the brown build up.