On the hygiene front, it depends what was actually dumped ...
![Cautious :cautious: :cautious:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
many people, especially in smaller vans, only ever use their porta potties for wee overnight, and go and find a public toilet (or NT property etc) for more in the morning. For 7 years, until this year, this strategy has worked ok enough for us wild-camp touring in a VW. It usually lasts 2 nights until we go to a camp site in order to shower and get more water.
I confess, there have been a few occasions where I've emptied the loo in public places.
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But it's only ever been wee; no solids, no paper, no chemicals. Little different to the cow in the next field.
This is also identical to traditional practice camping on CLs, where any tent with with an extended flysheet would have a bucket so you didn't have to go outside at night, which got chucked in the hedge in the morning.
Wilding in a van, as I'm not paying a farmer for use of his field, I'm also really careful about where I've empty it. Moorland ditches, desolate forestry sites, or fast flowing rivers come to mind. And making sure there are no onlookers in case they jump to the wrong conclusion.
This year it has all changed, Many councils decided people don't need to go the the toilet during the pandemic, and and the Public Conveniences have been closed. The cafe's and attractions have also been shut. This made life difficult (but doesn't justify the total disregard some t-pots have had for public land).
So on a trip to SW Scotland in May, we had to poo in the potti. Finding places to empty it became a theme for the trip, it's only small. One time on a campsite the queue for the toilets was so long it was quicker to use our own, and go and empty it, before we left.
A more recent fortnight in Cornwall was easier, more public toilets were open, there were more campsites open, and we chose to use more pub stops.
Although this time I took a folding spade, I didn't need it. I wonder if the NT would have approved!
![Unsure :unsure: :unsure:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. this is also traditional practice. I remember arriving by bicycle at a C&CC weekend meet, and being given a toilet tent and a spade to dig my own loo! I think everyone is going nimby-ish, soft and lazy!