Home made RV holding tank solution

For those of you who own and use an RV, you know that the chemicals you buy at the store to put in the holding tank can get costly. And, you are literally flushing the money down the drain. Makes ya sick.
I found a home made tank solution that is much cheaper.
In an empty and clearly marked one gallon container place the following.
1 c. Borateem
1/2 c. Pine sol
3 T. Ammonia
Fill remainder with warm water. Make sure you have at least 10 gallons of water in your tank before you put this solution in. Then just put about 2 c. in to control odors.