Quote Originally Posted by Bob98SR5
when i was at toyota certified, they used a product like partsman mentioned. for the life of me, i cant remember the name. in anycase, yes it was a procedure that involved drilling a hole into the box and spraying the chemical stuff in it to kill any mold/bacteria.

BG Frigi-Clean is a good product for those that want to drill into their evap core. I believe this is what we used at the Toyota dealership.