I use an eco-friendly liquid (you won't get Ecoleaf over there) but same sort of thing - mild, no perfumes etc and a splash of white vinegar in the rinse water. I don't use much liquid either as modern machines here are designed to minimise water use which is a big pain in the rear as things don't get rinsed very well! My fleeces tend to rinse out fine - towels sometimes have to have a second rinse if there are suds left in the drum.
I don't use 'bio' products for the piggies - that's anything with enzymes in. People can get sensitivities to these so I'm very careful with my pigs. Even if piggy is fine trotting round when the fleece is dry, once it is peed on it can reactivate any enzymes which can cause problems with little feetsies. So if a product is advertising how well it cleans at low temperatures it is often a 'bio' product - some are marketed in a very eco-friendly way but I'm really not sure they are!