2 tsp. of real seasalt in a quart of water will flush the entire digestive tract.
then you'd put a sieve in the toilet...
crazy to add to your worry "deadly bacteria"...while you're in this predicament--oregano oil, olive leaf, all that stuff can be taken after--but yes, unless you (he) wanted to vomit, the salt water flush or the epsom salts is the way to move it out fast.