Dishwasher Gel very effective (Well, it's the "Sun" ... we can expect it to be effective), easy to dose if the compartment of your dishwasher has the appropriate scale (20 ml ) Plug "anti-drip" (non-return valve, on the model of some ketchups) very effective, impossible to put next, and nothing flowing in the cap. Is is MORE effective than tablets (is it "washes whiter?") ... Impossible to make a true comparison test, but in any case, the dishes are very clean, the glasses shine and show no traces. As for the "protection of the dishwasher" ... appointment in 10 years; o) Remains to be seen if washing by production cost is worth the price of ... large packs (of the same manufacturer, it is not certain)