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Drain Fly Killer PowderDr. Pooper Drain Cleaner & Maintenance Powder – Septic-Safe

The Drain Fly Knockout Bundle

Kill the drain flies — then clear the gunk they were breeding in

Spraying the flies never works for long. Drain Fly Killer wipes out what's living in the pipe today; Drain Cleaner & Maintenance strips out the organic film that keeps producing more.

4.8 / 5 from 11,686 verified reviews
  • Kills the drain flies you can see — and the eggs you can't
  • Strips out the organic film in your pipes that they breed in
  • Clears grease and sludge so slow drains run freely again
  • Kills the smell coming up out of the drain, not just masks it
  • Non-toxic, pesticide-free, septic-safe. Made in Hockley, TX
$76.47$89.92 Save $13.45 (14%)

One-time purchase · Free shipping · Made in the USA

  • Free shipping
  • 30-day money-back guarantee
  • Made in the USA
  • Safe for people, pets & pipes

What's in the bundle

One kills the flies. The other removes the reason they were there. Do only the first and they're back in a fortnight.

Drain Fly Killer Powder 1 Ã—

Step 1 — Kills the flies

Drain Fly Killer Powder

Sold separately: $39.97

  • Kills drain flies and sewer flies where they breed
  • Thick foam expands into the pipe, not just the drain opening
  • 4 complete treatments (16 doses) per pack
  • Safe for septic systems and older plumbing
Dr. Pooper Drain Cleaner & Maintenance Powder – Septic-Safe 1 Ã—

Step 2 — Removes the breeding ground

Dr. Pooper Drain Cleaner & Maintenance Powder – Septic-Safe

Sold separately: $49.95

  • Clears organic sludge and grease off pipe walls
  • Eliminates drain odors at the source
  • Resealable bag with scoop — pour, wait, flush warm water
  • Septic-friendly: feeds the good bacteria instead of killing them

How the bundle works

  1. 1

    Foam the drain

    Drain Fly Killer's expanding foam coats the inside of the pipe where flies lay eggs — sinks, showers, floor drains, disposals. Four full treatments per pack, 16 doses.

  2. 2

    Clear what fed them

    Flies come back because the grease and organic gunk lining your pipes is still there. A scoop of Drain Cleaner & Maintenance eats through it instead of burning a hole in it.

  3. 3

    Keep it clear monthly

    One scoop a month keeps pipe walls clean, drains flowing and the breeding ground gone. No flies to kill next time.

30-Day Money-Back Guarantee

Use the bundle on your drains for a full 30 days. If the flies aren't gone and your drains aren't running better, email us and we'll refund every cent you paid — no return shipping, no restocking fee, no argument.

  • Use the full bundle for 30 days — you don't have to return unused product to qualify
  • One email to support is all it takes. No forms, no hoops, no restocking fee
  • Refunded to your original payment method within 3–5 business days

Guarantee applies to the first bundle purchase per household. Contact support@doctorpooper.com within 30 days of delivery.

Questions before you buy

Why do drain flies keep coming back after I spray them?

Because sprays kill the adults, not the source. Drain flies breed in the layer of organic slime that builds up inside your pipes. Until that's gone, a new batch hatches every few days. That's exactly why these two go together — the foam kills what's living in the drain now, the powder removes what they were breeding in.

How fast will the flies be gone?

Most of the adults die off within a day or two of the first foam treatment. Give it a full cycle — treat, then keep up the monthly maintenance — before you judge it, since eggs already laid can still hatch in the first week.

Is it safe for my pipes and septic system?

Yes. No caustic chemicals, no pesticides. Both products are safe for older plumbing and for septic systems — the Drain Cleaner formula is built on the same bio-accelerator used in Dr. Pooper's septic products, so it actually helps a septic tank rather than hurting it.

Where can I use them?

Kitchen sinks, bathroom sinks, showers and tubs, floor drains, garbage disposals, toilets. Anywhere there's a drain with a slow flow, a smell, or flies hanging around it.

What if it doesn't work for me?

Email us within 30 days of delivery and we'll refund you. You don't have to ship anything back, and there's no restocking fee.

Try it for 30 days. Risk-free.

If the flies aren't gone and the drain still smells, email us and we'll refund you. Simple as that.

$76.47$89.92 Save $13.45

Free shipping · 30-day money-back guarantee · Made in the USA