R.L. Stine GB #62 MONSTER BLOOD IV

Evan Ross can't forget about Monster Blood, the evil green slime that never stops growing. It can turn ordinary pets into ferocious animals and twelve-year-old kids into freakish giants, but now there's a new kind of Monster Blood in town. It comes in a can just like the other, only difference is, this slime is blue instead of green and instead of just growing, it's multiplying, into terrifying blue creatures with razor sharp teeth