Here follows a bad German to English translation of the warnings on the side of the container using Alta Vista Bablefish's language translator:

"Special cleaning tablets for Espresso Machines.

1 tablet per cleaning. Instruction of the machine manufacturer consider.

Natriumcarbonat contains Peroxohydrat injurious to health.

R22 injurious to health when swallowing. R38 provokes the skin. R41 danger of serious eye damage. S2 may not arrive into the hands of children. S25 contact with the eyes avoid. S26 during contact with the eyes thoroughly with water rinse off and physician consult. S37 suitable schutzhandschuhe carry (I think this translates to "wear gloves when handling"). S46 when swallowing immediately medical advice catch up and packing or label present.

Contents materials: 30% Phosphatem bleach on oxygen basis."