I'd be bringing my own muriatic acid. I am a US citizen living in Mexico. It cracks me up the stuff I find in convenience stores here, such as muriatic acid, 3cc syringes, etc. People from Mexico are TOUGH!!!!!!!!!!!! Oh hell yeah!!!!!!!!!!! No furnaces in the winter, 118(F) summers while working construction (Desert), 6 day workweeks, and who needs a bit of Dawn Powerwash when you can go for the muriatic acid! ;o))))