Removing old adhesive from concrete
We are trying to get my MIL's house ready to sell and removed some outdoor carpet from the front concrete stairs/porch. The adhesive is quite tough and patchy, a yellowish color. I've been trying to chip it off but that is very hard and time consuming. Someone else bought grey paint to put on the concrete but the label says it makes the concrete slippery when wet (but an additive would help- would that include adding sand?) and also cannot be used on vertical surfaces. Any ideas for removing the adhesive easily without exposing myself to petroleum distillates, or should I just use the paint?