I just have to laugh at this post!
We had the clog problem in our last house, so when we moved into our new home, DH said he would fix the problem. He went to Canada to buy the 3 gallon flush toilets. Well, our neighbors heard about this, so they placed their orders. So, here is DH and 3 of his buddies making a "toilet run" to Canada. At the border they ask the reason for your trip and what you bought. I would have loved to see the guards face when DH said 5 toilets!
And yes, on ship, don't be anywhere near the toilets when you flush. They are very strong. DH is trying to figure out how to install them in our house!