Complex sentence: The toilet brush can be used to clean the upper area of the toilet, around the bowl, however, cannot be used to clean very far into the toilet's trap and should not be used to clean the toilet seat.
Split into simpler sentences: The toilet brush can be used to clean the upper area of the toilet, around the bowl. However, it cannot be used to clean very far into the toilet's trap and should not be used to clean the toilet seat.