Sure Fit Toilet Lock - Dissapointed

OK, after two months of use, we are officially disappointed by these contraptions.  With the warmer, more humid weather, the guards consistently fall off within an hour, usually much sooner.  The suction cups are just not made of a flexible enough material (like silicone), and the locking mechanism that creates suction just doesn't do enough.

My recommendation - try something else.  We will, just haven't decided what yet.