You are right. I did not see the massive parotoid glands when I first looked at the photo due to the poor focus-I was trying to do it from cranial crests. Giving it a second look, yeah. It is definitely a Rhinella (whether it is actually marinus is another matter, the species has been split up a few times).
As for valliceps, it is still a valid taxon (http://research.amnh.org/vz/herpetol...rences&id=2962), thought genus name has changed yet again... (A pox be upon you DR Frost!)
In that case, my advice changes. Where do you live Mightmousemom? If in FL... for the love of god, kill it! They are invasive in your state. Go get some max strength oragel, catch the toads, and apply a good solid dab of it the size of your thumbnail on the toad's head. The active ingredient will literally numb the toad to death.
If in S. Texas, just let them be.