Silver Mylar windmills yog ua los ntawm cov khoom yas zoo, tsis muaj tshuaj lom uas tsis ua rau muaj kev puas tsuaj rau ib puag ncig thiab tsiaj. Peb cov noog-repelling windmill li tsis ntshai thiab ua mob rau cov noog, tab sis tib neeg ntshai lawv los ntawm kev cuam tshuam lub teeb pom kev zoo.
