Wisk tablets actually cleaned and worked very well in front loaders. Would mash up the sachet and decant the contents into a mason jar. One or two tablespoons handled the most grossly soiled loads.
The first version (in the red box) contained perborate bleach and a bleaching activator which gave Persil a run for it's money I'm here to tell you. While that particular version was not labeled "HE" machine safe, used it anyway. Contacted Lever Bros to tell them how happy I was with Wisk tablets in my front loader, and the customer service person told me though the product was not labeled "HE" it was tested for use in such machines. Lever Bros even sent me several coupons for "free" boxes of Wisk tablets. Needless to say stocked up every time saw a store putting them on closeout.
Because of the last bit, never bothered buying more when I saw a local discount/overstock store had Wisk tablets in stock. By the time I heard the product was discontinued and ran back to said store, they were totally out of stock. The owner even said "you know, for months I couldn't give that detergent away, now that I cannot get anymore everyone is asking for it".
With my new soild door Miele, it is more important than ever to use detergents that are low sudsing/easy rinsing. Since I cannot see what is going on in there, it seems prudent to start using "HE" detergents. Be this as it may, refuse to pay the highway robbery prices one pays in the United States for Persil.
My current favourite detergents, Cheer Free and Tide CW powder do work well, but one has to really watch the dosage to prevent over sudsing. Still, will use Cheer Free for darks and linens as it cleans well with no scent, while preserving colours. Both detergents seem fine with shirts and regular laundry, it is the very absorbent/froth making items like terry cloth towels and such which cause problems.
L.