u/Legal-Cat-7465

My roommate works as a line cook at a chain restaurant that handles beef tallow. Every so often a film on the tub will appear that seems unmovable by hot water and even bleach. The only way I’ve been able to get it off is by using some elbow grease and a toothbrush to scrub. I don’t really feel like scrubbing an entire tub with a tiny toothbrush whenever I desire to take a bath. Does anyone else have experience with this? There’s gotta be a better way…