How does data hygiene work?
Perhaps, the most common data hygiene procedure is deduplication (removing duplicate records). All modern CRM software is capable of performing this task automatically. It's also possible to create automatic workflows, requiring account managers to periodically check that all contact information for their accounts is still accurate.
If you are looking for a simple and powerful CRM with serious data hygiene capabilities, consider Bitrix24. With over 35 tools on board, Bitrix24 is a perfect tool for any business.