However once we were shown how to empty and flush a black tank, we soon realized that it is not as bad as it seems, but the cost started to add up...
The cost for the special RV toilet paper (I'll be posting about our solution to that soon) and the cost of the special tank cleaners and deodorizers were not something we thought about when buying a RV. Our grocery budget didn't know what hit it!
Worst of all some of them didn't seem to actually do anything!
We tried a few finally settling on one that worked very well from Amazon, but the cost of it (even more than the others) prompted me to look into making my own.
With a bit of trepidation (I had to look up how to spell that!), I made an old enzyme cleaner recipe I had for things like floors etc. and we decided to give it a try.
The results were amazing! It worked better than the store bought expensive stuff and costs pennies!
Here's the recipe along with some tips:
In a large container (think at least a gallon) that has a lid (screw top is better) mix:
1 teaspoon active dry yeast
1/2 cup brown sugar
2 cups lemons cut up (or lemon remnants)
Fill the container with warm water (leave about an inch or more of space at the top)
Put the container in something that you won't need to use often (like the cake pan you see in the picture) and put the lid on loosely. Of course, during travel I secure these so they don't spill.
But, if you don't put the lid on loosely pressure will build and....well it won't be pretty.
Now, leave it alone for about 2 weeks or longer.
About a cup or two down the black tank and/or grey tanks (if you like) will keep everything dissolving nicely.
Keep a batch brewing going at all times and when I run out of the batch that I'm using, I switch over to the brewing batch to use and make another batch (draining out the sold bits before I use it).
I use two old laundry detergent containers for this process, one of which I cut the spout off of, so I could fit the lemon pieces into it and the other I left the spout on for easy of use.
Get lemons and make lemon aid. I store left over peels in a zip lock bag in the freezer. This way I always have lemons I can make the cleaner with and my husband gets fresh lemon aid on the regular (which he appreciates).
We've been using this for a few years now with no problems, but because I do not want to be responsible for your RV here is a disclaimer: This information is just what I do. If it would damage your RV please don't do this. I am just a fellow RVer like you trying to figure this stuff out and not a chemist or a professional anything to know what could or could not hurt your RV.
If you're interested in the better store bought tank cleaners we bought before making our own this is the one we liked the most...but it's pricey.