Manual Dental Irrigator is Very Good
Well worth the $8 for convenience (compact and light to travel with), affordability and effectiveness.  No waterpic unless it blasts your dentin off is going to do the job of floss between the the teeth or the toothbrush on the outer surfaces.  But this tool has become the 3rd leg of my 3 leg dental upkeep arsenal, I lost the cap to my powered unit and tried this one.  If you have a filling that has dropped out of service - this tool with warm (body temp) water will evacuate just about anything getting stuck up in there, (toothbrush, irrigator etc. for some stubborn food), especially if you use the toothbrush too.  Also you can quickly give yourself a superficial flossing in less than minute and with a quick brushing be ready for facing off after lunch.
Rating: 5 stars