There is a urine-like smell coming from my bathroom. However, we washed the rugs and towels, used straight pine-sol on the floor and washed the shower. The bathroom is spotless but the smell is stronger than ever. I think it may be coming from under the house or is it worse?

Post this under "Plumbing". There are some excellent professional plumbers who will ask you questions and give you some ideas. It may be as simple as removing the toilet and cleaning underneath it. It could be a clogged vent pipe or a broken pipe that's leaking. It depends a lot on what the pipe layout is.