Why Does Mold Keep Coming Back? (And Why Bleach Isn’t the Answer)

Written By Dizzie .

We got a message recently from a homeowner in Mid-Missouri. He said:

"I power wash this exterior wall every year with bleach, but it keeps coming back every spring. The wall gets zero direct sunlight and always grows mold. What can I do to stop this for good?"

This is one of the most common questions we get.

Here's the short answer:

Bleach doesn’t kill mold at the root.

It might lighten the stain for a while, but that mold? It’s still alive and buried deep in the pores of your surface—especially in shaded, damp spots like north-facing walls or areas with no direct sunlight.

So every spring, it comes back. And every spring, you're right back at it with the bleach and power washer.

The CA Cleaning Difference

At CA Cleaning, we use a proprietary solution called Juice Bomb. It’s not bleach. It’s not SH. It’s a professional-grade, eco-friendly cleaner that’s designed to:

  • Kill mold at the root

  • Prevent regrowth for up to 18 months

  • Protect your surfaces without damaging plants, paint, or siding

That’s why we confidently offer an 18-month guarantee on our washes. Most other companies in town? They’ll be back in 6 months to do it all over again.

Family-Owned, Columbia-Based, Results-Driven

We’re not a franchise. We’re a family-owned business based right here in Columbia, MO, and we take pride in doing things right the first time.

So if you're tired of the same mold returning year after year, stop treating the symptoms. Let’s fix the root of the problem—once and for all.

📞 Message us today for a free quote.

Dizzie .