Mildew in Bath

Can you give me advice on how to remove the bathtub mildew in the caulking?  Is their a product that will keep it under control? Or do I need to remove it completely and start over again?   We have at least 4 showers going on a day so it is constantly moist in there.  Thanks for your help.

Mildew typically grows into caulk and therefore can not be easily removed.  The best offense is a good defense.  I'd suggest removing the old caulk and replacing it with a bathtub caulk that includes a mold/mildew inhibitor.  DAP makes a product called Kwik Seal Plus that has a inhibitor called Microban which has shown success.

And since you are going to have to replace your caulk anyway, here is a tip to make sure it stays put, fill the tub with water before caulking. The weight of the water will force the tub to sag a bit.  Then, after the caulk dries, drain the tub. This compresses the caulk so it won't fall out and mildew in your bath will no longer be a problem!.