oyyyyyyyyy! Well..I have experience with Tar and brand new carpet! My daughter was in high school and a runner. She went out for a run and tracked wet tar all over our new light carpet. we tried everything in a panic..and goo b gone worked. I'm sure it would work on her feet too..but I wouldn't risk it. Maybe peanut butter? It gets gum out of hair. Ice cubes will harden it..and might make it easier to chip out. Jeeeez..what a mess.. Sorry Cheryl..