Why won't either toilet in my mobile home flush?
Well I am leaving this as an answer because of limited information.if you live in a park contact the superintendent. If on your own property your pipes or tank can be plugged. More information is needed. And you may need to have your tank pumped. I have helped a firend that had a park and with floods one of the tanks floated several inches and broke the pipes the filled with mud and several homes had the exact problems you have more info is needed.