Oh, I feel your pain. I have lost 2 cats in the last couple years, one to cancer and one to kidney disease. I am now treating my oldest cat (19) with IV fluids due to kidney failure. This is not to extend his life but make his last days more comfortable. I agree invasive surgery in a frail cat is not the right thing to do. Try the herbal product, and see what happens. If his suffering and bad days out weighs his good days and quality of life, you may have to make the decision to let go, it is a hard one but You will know when it is time to let go of him. Hugs