The brush paddle is the simplest way for regular drainage cleaning. You just insert the paddle, twist 90 degrees and move it along the drain.
Accessories - Slot Drain®
WHAT ARE THE BEST POLE BARN FLOOR DRAIN IDEAS?
Floor Drains 101 - Global Drain Technologies
Rothenberger Pipe & Drain Cleaning Coil 1.32m - Screwfix
Would you ever get something like this for cleaning tools? : r/drywall
Distillery Drainage: How to Choose the Best System for Your
Hair Brush Set Kit Paddle Round Drying Brush Comb Clips Beauty
Products - FoodSafe Drains
Drillbrush Pool & Marine Medium Blue Drill Brush
Flexible Drain Cleaner Brush (72 Long) for Clogs