Persil Stain Fighter needs a 5-minute pre-treatment window

The 5-minute pre-treatment window is the whole secret.

You don’t dump Persil Stain Fighter in the drum and hope. You apply it directly to the stain, rub it in, and let it sit for 5–10 minutes before the wash. That brief pre-soak is where the chemistry happens — the enzymes get a head start on the stain before the main detergent cycle kicks in. Works in front-loaders and top-loaders alike. The machine is just the delivery system; the real work happens in the wait.