Regularly update your negative keywords lists based on the analysis of the effectiveness of your advertising campaigns.

Use different variations of negative keywords, including synonyms and misspellings, and conjugations.

Don't go overboard with negative keywords to avoid limiting the potential reach of your campaigns.

Communicate with your team and involve them in the process of identifying irrelevant queries. Often, specialists who work directly with customers or products can provide valuable insights.

Use keyword analysis tools that can help identify potential negative keywords based on search frequency and relevance.

Check the effectiveness of your negative keywords by analyzing your campaign performance reports. If you notice a decrease in traffic but an increase in conversions, this may indicate that you have chosen the right negative keywords.

Be attentive to the context of your business and the specifics of the products or services you offer. Some words may be negative keywords for one campaign but are perfectly acceptable and effective for another.

Don't forget about the possibility of using negative keywords for geographic targeting. If your business is localized or focused on a particular region, exclude the names of cities and countries that go beyond your target audience.

Create detailed negative keyword lists for different languages and dialects if your target audience is multicultural or international. This will help you avoid misunderstandings and improve targeting accuracy.