I've always used the jet nozzles, but was interested to see how the other methods worked in the videos. I like the test they do in another video on the ice cubes "cleaning the tank". Some swear by it, the test shows otherwise. Products such as RV Digest It work way better and will clean sensors and get stuff out of the tank you didn't know was in there, provided you follow the instructions. I've used it, it does work very well. Did it on a friends RV after 2 years of use. After 3 days sitting in the tank, flushed etc, all sensors worked again, and although he thought the tank was clean before starting, it dumped as if it had been in use a while. Just 2 cents worth and a little off topic.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)