A care label is a legally required, tested minimum, not a suggestion. Federal rules dictate what it must cover, in what order, and require the manufacturer to have real test evidence behind every instruction on it.
The FTC's Care Labeling Rule requires manufacturers to have a reasonable, evidence-based reason for every care instruction on a garment's label, typically real wash and dry tests on the actual fabric, and specifies exactly what the label must address: washing or dry cleaning, bleaching, drying, and ironing, generally in that order. It is a legal minimum safe process, tested to avoid substantial harm, not necessarily the only method that would work.
Wash or dry-clean knits before storage. Fold, do not hang. Use a tight container. University of Kentucky: cleaning kills eggs and larvae and removes the perspiration that attracts pests. Cedar and lavender do not.
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