This concentrate cleans very well, is also suitable for vehicles with Kunststoffscheinwerfergäsern not it reaches the plastic on, also it is cheaper as in normal Handel.Ich have chosen this because yes is still winter, you get This concentrate also for summer use with less alcohol drin.Klar there are even cheaper at Amazon, but I always see the good cleaner with each other and not billigsten.Beim discounter costs a 5 liter Scheibenreiniger car entertainment from 4.99 to 5.99 euros but too much alcohol me there is in it and that stinks gewaltig.Dieses product will cost 15,00 EUR. but that you can dilute it depending on the season either 50-50 or the 30-20 no matter you get definitely more for the money.