The tile industry has long advised silicone to be the accepted method for areas such as where floors and walls meet. Their reason is that slight movement is to be expected and silicone is flexible.
I agree to the above statement thus far. Problem is that if you use silicone or caulk in wet areas such as shower floors, you have just introduced a completely different issue. Water and moisture combined with soap and shampoo residue can lead to mildew/fungus issues. That dreaded black growth (mold) starts to set in. Once this happens, complete removal of the silicone or caulk is needed. Most of us reading this have seen the problem at some point in time in our bathroom.
The only way to prevent this issue is to wipe the shower down completely including walls, floors, shower doors. The shower needs to dry out between uses. Most of us may wipe down the shower door but that isn't enough. What about the metal frame or channel that holds the shower door? If your enclosure has this type of configuration, that channel is holding water which is impossible to wipe dry.
Front label says "7 YR MOLD-FREE" what does that mean exactly?
Rear label in fine print gives us more detailed information.
Anything that is "resistant" means nothing. Why don't they put "7 YR MOLD-PROOF" on the front?