Kirkland Signature Moist Flushable Wipes are made with EcoFlush technology from 100% plant-based materials and are free of chemical binders. These wipes pass extensive testing for flushability and are proven, when flushed one wipe at a time, to pass through a home's well-maintained toilet and drain lines or septic system without clogging. These wipes are also proven to pass through sewer systems and are compatible with wastewater treatment plants. This technology means you can feel confident flushing one wipe at a time. Never flush more than one wipe at a time. Make sure sewer and septic systems are well-maintained and there are no tree roots growing in the sewer lines. Kirkland Signature Moist Flushable wipes are not recommended for use in motor homes or with basement pump systems.