The Kasstetten are okay and it also does not smell (we have just started with the complementary feeding, so with larger babies may be verified). The processing of the cassettes is mE something minderwärtiger as dasjengie 6 months + cartridges. Under normal use a cassette for about 10 days is sufficient. The product description, after which the cartridge is sufficient for one month, is absolutely out of thin air and is in my opinion totally misleading. Will the next time the two-cartridge 6M + buy because at low price Scheid the quality is a lot better.