2.6 Gal/10L Collapsible Wash Basin with Drain Plug, Portable Foldable Dish Tub, Large Capacity Space-Saving Sink for Baby Bottles, RV, Camping, Kitchen, Travel & Outdoor Use

I have this wash basin just for syringes. https://a.co/d/0bJ9NfCY After each use, I rinse the syringe. At the end of the day, I soak them in the basin with warm water and a squirt of dawn. Then I rinse and leave out overnight to dry. They usually last me 2 weeks or so.