Hi,
We use the classic Joe Jenkins
Humanure system but have a separate section for the urine. We needed to include more moisture into the system and this is one way of doing it. Thankfully, when my husband build the housing for the humanure buckets he made it as big as he could and we have 3 compartments. So the compartment for urine only is 1) a large 20liter bottle, 2) a funnel made from a similar bottle cut in half, top half turned upside down and fits under the toilet seat, 3) a spray bottle with
water and a few drops of aromatherapy oil used to rinse the funnel after every use.
It works well as long as you empty it often. We empty it every 4 or 5 days. The smells don't seem to
escape from the narrow funnel opening. Of
course this is like a bidet; if need to do both #1 and #2 or aren't
sure you need to use the standard
bucket.
Hope this was helpful.
Linda