If you are like most people, you may not clean as much as you would like. You may focus your limited time on the things that are the most prone to causes sickness like the toilet and the sinks, and that might mean other things go untouched for perhaps a little longer than you would like. There are some things that can go without a cleaning for a while and it won’t make much difference. Shower tiles are not one of these things. When you get behind with this chore, they can be very hard to clean. You have two basic choices when you are going to clean shower tiles that have been neglected. You can use a very strong cleaner, or you can use something a bit safer. There are downfalls and benefits to both. The harsh cleaner leaves toxic fumes in the air, and are not the best choice when you have pets and children in the home.