Comments on: Make Your Own RV Black Tank Cleaning Bombs

By: Kimberly

Kimberly — Wed, 04 Jun 2025 19:42:14 +0000

Connie,

Usually, when I am getting the RV ready for winter storage, I add a little anti-freeze to the black tank too. (Usually whatever is leftover from the sink p-traps) This will help protect the seal and gaskets at the bottom from drying out and also from freezing. This is of course, after doing a really good and thorough black tank wash. I find that when I do all this, the toilet bomb isn’t needed during the offseason storage.

Different story if you are using it during winter, in which case, I still use the toilet bombs.

Kimberly

By: Connie Alderson

Connie Alderson — Thu, 08 May 2025 08:36:56 +0000

Kimberly,
Do you leave enough water to fill the bottom of your tank along with a toilet bomb during the winter months while it’s in storage as well? I live in Southwest Texas and it gets to freezing during winter months. Thank you!

By: Cajunaut

Cajunaut — Tue, 28 Mar 2023 11:32:27 +0000

In reply to Kimberly. Thanks Ms Kimberly

By: Kimberly

Kimberly — Sun, 19 Mar 2023 19:52:30 +0000

In reply to Cajunaut. The cleaning bombs don't "live" in the toilet bowl. They go into the black tank, so they won't affect the gaskets that keep the water in the bowl. If anything, the RV Black Tank Cleaning Bombs are going to be safer than most chemicals, including bleach, that you would normally use to clean toilets and bathrooms.

By: Cajunaut

Cajunaut — Sun, 19 Mar 2023 12:46:47 +0000

I’m just curious…..will these bombs deteriorate the ball gasket or slide gaskets that hold some water in the bowl?

By: Kimberly

Kimberly — Mon, 15 Aug 2022 22:57:22 +0000

In reply to Kelly.

Kelly,

I agree – this heat is relentless. I have found that adding the RV Black Tank Bombs between dumps does help. Good luck!

Kimberly

By: Kelly

Kelly — Sat, 13 Aug 2022 14:18:19 +0000

We have a houseboat and our black tank is pumped every two weeks. The heat this summer is relentless. Do you think using the bombs during that two week span would help with the smell after flushing? Or should the bombs just be used after dumping? Thanks

By: Kimberly

Kimberly — Wed, 03 Aug 2022 20:32:27 +0000

In reply to Joy. Joy, this summer heat is brutal and no joke! To answer your question, yes, you can add extra as you go along if needed. Hope that helps. And remember, it'll cool off at some point. Hopefully soon. -Kimberly

By: Joy

Joy — Mon, 25 Jul 2022 17:50:43 +0000

I live in my Grand Design Reflection travel trailer full time and parked so I can’t move it around to get the slosh effect of a washing machine in mine. This 100 plus degree weather we are having this summer us making my black tanks stink some kind of awful every time I flush. I’m having to dump my black tank frequent during to smell. My question is can I add the bomb to my tank while using to keep smells down? I did my first batch yesterday and dropped a few in there after dumping and let it soak for a while before flushing the tank and it still smells.

By: Kimberly

Kimberly — Fri, 18 Mar 2022 00:50:42 +0000

In reply to Ewuradjoa Osae.

I haven’t found an expiration date yet! 🙂

Do keep the RV Black Tank Bombs in an air-tight container though. If not, just the humidity in the air is enough to make the hardened bomb over time. And then when they hit the water in the toilet, they will actually explode and make a mess. Ask me how I know.

-Kimberly