True or False: All blended solvents must be rinsed thoroughly to prevent re-soiling.

The statement is true because blended solvents often contain a combination of cleaning agents that, if not rinsed thoroughly, can leave a residue on the carpet fibers. This residue can attract dirt and grime, leading to re-soiling over time. Thorough rinsing is essential to ensure that all cleaning agents are removed from the carpet.

Proper rinsing not only helps to avoid the buildup of residues but also ensures that the carpet remains in optimal condition after cleaning. Some cleaning agents can form sticky residues that hold onto dirt, so a good rinse helps maintain the carpet's appearance and cleanliness for a longer period. In contrast, some options suggest that only specific types of solvents or specific conditions matter, which doesn’t encompass the broader requirement for all blended solvents ensuring effective cleaning outcomes.