I've run the rotohoe through it and it does mix into soil amazingly well. After the first couple of waterings and about a week in the soil, a couple pebble sized chunks (from about 20L of material turned into the soil) surfaced and they are still stark white, but smaller bits have incorporated into the soil very well. It has yet to fully change to soil colour, but you'd never know there was 20-odd litres of waste Fytocell incorporated in this soil. If for stealth reasons you're looking for a way to make the stuff totally disappear, soil incorporation may not be the way. I suspect there always will be a bit or two of it popping up now and again, we'll see. However, it does work in very well and definitely has improved the water retention of some sandy/silty loam soil, at least as well as an equivalent volume of compost. The water holding quality will continue with Fytocell until it breaks down, said by the maker to be about 10 years until it is fully biodegraded. Compost won't last quite that long as a soil conditioner.