What are the sanitary conditions in Thailand ?
Be prepared and never expect a clean toilet 100% of the time. Carry some tissue in-case you need to use the public toilet. Also, like in many Asian countries, there may be no toilet paper at all. In some areas/restaurants, toilet systems are old and have very narrow plumbing and get blocked easily. Use hotel lobby toilets; these are everywhere and are always clean. Still, they may not always have toilet paper. It depends on the class of hotel that you are using.