▁remove ▁the ▁resid ues ▁from ▁the ▁dis in fect ants . ▁This ▁is ▁the ▁reason ▁why ▁need les ▁and ▁s yr ing es ▁are ▁not ▁ster il ized ▁in ▁this ▁way , ▁as ▁the ▁resid ues ▁left ▁by ▁the ▁chemical ▁solution ▁that ▁has ▁been ▁used ▁to ▁dis in fect ▁them ▁cannot ▁be ▁was hed ▁off ▁with ▁water ▁and ▁they ▁may ▁inter f ere ▁with ▁the ▁admin ister ed ▁treatment . ▁Although ▁formal de hy de ▁is ▁less ▁expensive ▁than ▁gl ut ar al de hy des , ▁it ▁is ▁also ▁more ▁ir rit ating ▁to ▁the ▁eyes , ▁skin ▁and ▁resp ir atory ▁tract ▁and ▁is ▁class ified ▁as ▁a ▁potential ▁car cin ogen . ▁ ▁Other ▁ster il ization ▁methods ▁exist , ▁though ▁their ▁efficiency ▁is ▁still ▁controvers ial . ▁These ▁methods ▁include ▁gas , ▁U V , ▁gas ▁pl asma , ▁and ▁chemical ▁ster il ization ▁with ▁agents ▁such ▁as ▁per ox y ac etic ▁acid ▁or ▁para form al de hy de . ▁ ▁C lean ing ▁In fe ctions ▁can ▁be ▁prevent ed ▁from ▁occurr ing ▁in ▁homes ▁as ▁well . ▁In ▁order ▁to ▁reduce ▁their ▁ch ances ▁to ▁contract ▁an ▁in fection , ▁individuals ▁are ▁recommended ▁to ▁maintain ▁a ▁good ▁h yg iene ▁by ▁was hing ▁their ▁hands ▁after ▁every ▁contact ▁with ▁question able ▁areas ▁or ▁bod ily ▁flu ids ▁and ▁by ▁dispos ing ▁of ▁garbage ▁at ▁regular ▁intervals ▁to ▁prevent ▁germ s ▁from ▁growing . ▁ ▁Dis in fection ▁Dis in fection ▁uses ▁liquid ▁chemical s ▁on