Here is perhaps a more important thing to keep in mind…if you have tried corrosive chemicals to remove the clog and it didn't work, you may really need a plumber for your clogged toilet. Those chemicals can damage your toilet if it is continually exposed to them. If the chemicals eat a hole in your pipes under the waterline, you won't know it until it's too late!
It is NOT too late if you do the sensible thing and call Brent, the plumber/owner of Staats Plumbing, a full-service plumber serving the Columbus, Ohio area. The Staats team does so much more. Just google staatsplumbing.com and see for yourself. Then call (740) 625-5284.