1. ʻAʻole e pili ka mea pale i ka solvent (e like me ka ʻaila diesel, acetone, hydrocarbon solvent, trichlorethylene), ka mea e hoʻomoʻa ai i ka pulu lau a i ʻole ka lulu no ka hana ʻana.
2. E hana ʻia nā mea i ulana i nā mea e pale aku ai ke kaula me ka kaula o loko, a i ʻole e loaʻa ka ʻili e pono e ʻike ai i nā ʻano hana.