I also use the Squeezie, only because I can sterilize it. I preferred the traditional bottle when I added meds because it it was easier to get correct volume for mixing. I’m not using meds now and correct volume is less important.
I disinfect the Squeezie by washing/rinsing in v hot water after every use and putting in Bololo with the neb cup daily. If I’ve had colored secretions, I use the microwave bag after second sinus rinse. Before I got Bololo, I boiled or used microwave bag after washing to disinfect it.