flow back to rinse tank 18 via path 42 along with clean perc from condenser 34 at a point in the cycle when the perc is too contaminated to be used for cleaning purposes it is caused to flow into still 36 so that it can be returned to the cleaning cycle via paths 38 44 and condenser 34 previously mentioned perc which is some what contaminated but is still useable for cleaning may be returned to work tank via path 40 perc which is contaminated to such a sufficient degree may be pumped directly to filter cartridges 46 via path 48 valve 50 and pump 20 previously mentioned and then returned either directly to the drum 14 via path 52 and valve 54 or to still 36 via path 56 and valve 58 as a particular cleaning cycle may require after perc has been recycle several times that is so many gallons per so many kilo pounds of clothes cleaned separator 32 is drained of perc which is colected in container 60 but instead of discarding as is normally done in a conventional dry cleaning system this slightly contaminated perc is returned to still 36 either by a optional pump 62 via path 64 or by physically taking container 60 and dumping the contents therein into funnel 66 while opening valve 68 in any case the important consideration is that the perc is returned to the system at a point where it will be.