When you need to seriously clean your bathroom take the towels out and assemble an arsenal of spray cleaners and wipes and go to town. To keep these supplies close at hand you may want to consider adding a towel rod to your laundry room to ensure your cleanings supplies are always ready to go.
Real Simple magazine's weblog gives this tip and recommends adding a towel rod to your bathroom expressly for cleaning supplies, but this humble writer thinks that keeping your spray bottle weaponry in a central location such as the laundry room might work better. When it's time to deep-clean the bathrooms just yank your towels from the already existing towel rods there and go to town.
Towel Rod as Cleaning Supply Holder [Real Simple]