I never thought of that--that someone could put something gross in the shampoo dispensers. However, I won't use ketchup or mustard bottles in restaurants for that reason. I stock up on ketchup and mustard packs from McDonald's for my kids. I also carry wash-and-dri towelettes to wipe off toilet seats. I also teach my kids never to use the next portion of toilet paper from the roll in public restrooms. Pull off about 8-10 sheets worth to get a cleaner part underneath. And I carry that hand sanitizer that doesn't need rinsing. And I always carry Clorox toilet wipes and go over the toilet upon first entering a hotel room. Remember the old days, when toilets seats in hotels had those bands of paper around them so you knew no one had used them since the last cleaning? Oh, and I wash out the glasses in the room before using them unless they have the plastic coverings. Other than that, I'm just your basic slob...