The campground we stayed at near Sandusky didn't have a convenient dump station. We were happy to find out that some of the Ohio Turnpike service plazas have free dump facilities. We pulled in, only had to wait for one other RV to take care of their business and we're done within about 20 minutes. According to the info I found online, there are 4 eastbound and 4 westbound plazas that offer this free service.