Wording for a new sign in my head

NOTHING GOES IN THE BOWL UNLESS IT COMES OUT
OF YOUR HOLE OR OFF THIS ROLL
I'm going to post it above the toilet paper in bold font LOL.Next question: have you recently had landlubber guests aboard? 90% of marine toilet problems are caused by guests who flush something the system can't handle. So it's VERY important to tell them that NOTHING they haven't eaten first can go into the toilet except for the TP that you've provided.
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NOTHING GOES IN THE BOWL UNLESS IT COMES OUT
OF YOUR HOLE OR OFF THIS ROLL