Ecoballs reg replace washing powder as seen on the bbc eco balls not only save on heavy shopping loads they are reusable for up to 1 000 washes and cost only around 3p per wash that compares with 25p 30p for washing powder 100 hypoallergenic residue free and anti bacterial eco balls are a more natural alternative to conventional washing powders and are ideal for sensitive skins if everyone switched to eco balls 700 000 fewer tons of detergent would end up in our water system eve