At the end of the day, there are only 4 things a body needs to survive: water, food, oxygen and a functioning nervous system.  When using a high PAH  content / coal tar sealcoat you are contaminating 3 out of 4.  With the possibility of endangering the 4th.  Studies have shown that children 0-6yrs of age when exposed to a high PAH rich environment, increased their lifetime risk of cancer by 38X!  Our children experience their world through touch, play and constantly putting things in their mouths.   When there is a safe alternative - why wouldn't you?  We encourage you to visit Coal Tar Free America website to learn more about how to protect our air, ground, water and children with an asphalt based sealcoat.