Chemical zombies suck! On the one hand you may be able to kill them without a head shot on the other hand you may not need to be bitten to get infected. Plus in nearly every ChemZom movie they retain way to much intelligence.
I just watch one with ray liotta that looked like a film student fan video. these M'effn zombies retained all of thier memories and skills. WTF!!!! Something of the damed it was called. My brain is trying tho surpress the memory of watching it. Plus if you have the urge to rent ZOMBIEZ do not it will tear off a piece of your soul and never give it back.