I understand, that you are live in Latvia. I am in Estonia - almoust neighbour. Same bad winter, salt and so one. I need some information about winter car care and protection. What products to you use as prewash? Bilthamber Autofoam? My problem is that Bilt Hamber killing all my LSP`s hydrophobic effects.(sealant, wax). If I make only 4% solutions, then it dont work. If i use 50/50, it ok, but all wax and sealants died, because it`s too strong. What products do you use in Latvia?