Filter floss/sponges ... same thing.. they MUST be rinsed at least 2x a week for them to be effective.. if you know you can't do that then I would say it is better to not use them vs use them and have them all clogged with waste sitting there in the tank. They do help out A LOT.... if you rinse them regularly and replace them as needed. I wouldn't spend a lot of money on fancy expensive pads that have media embeded in the pad though because those are a waste of $.. too expensive and don't last long. Better off getting cheap filter pad/floss material.