Amazon Negative Keywords & Smart Negative Harvesting
Negative keywords guide →Smart Negative Harvesting is an Amazon negative keywords tool designed to help advertisers find negative keywords automatically and maintain clean, scalable Amazon PPC structures.
By combining structured negative keyword research with algorithmic detection, the system reduces wasted spend and improves campaign efficiency without manual search term audits. This module is responsible for identifying Amazon negative keywords and integrating them directly into campaign structure.

Turn wasted search traffic into cleaner Amazon PPC structure.
For the query layer this process reads, see the Search Terms guide.
Use this workflow when you need faster negative keyword detection, better traffic filtering, and a scalable way to maintain campaign control without constant manual audits.
Advertisers who want to find and apply negative keywords at scale without manual search term audits.
Negative Exact, Negative Phrase, and Negative Product logic through search term analysis, n-gram detection, and configurable thresholds.
Cleaner traffic, lower wasted spend, and stronger PPC precision without disrupting campaign structure.
Negative Phrase vs Negative Exact on Amazon
Understanding negative phrase vs negative exact Amazon is critical for maintaining campaign precision.
The system automatically determines when to apply phrase exclusions or exact exclusions, ensuring accuracy without over-blocking valuable search traffic. This ensures proper control across Amazon PPC negative keywords without restricting valuable converting queries.
Finding Negative Keywords Automatically
The algorithm analyzes search terms in their entirety, as well as breaks them down into individual words, checking the statistics for each one to determine Negative Exact, Negative Phrase, and Negative Product, based on the variables set in the configuration.
The system uses n gram analysis to detect performance patterns inside search terms and individual word clusters. This process simplifies finding negative keywords at scale without manual search term auditing.
The analysis is conducted for the product family over the entire available period, allowing for precise identification of which terms or words need to be excluded from advertising campaigns to improve their effectiveness.
The logic behind the engine functions similarly to a negative keywords generator, but within a controlled optimization framework rather than as a standalone tool.
For the broader keyword framework behind this logic, see the Amazon Keywords guide.

Maximum Purchases
Maximum Purchases is the number of purchases after which a word or search term is no longer considered negative, regardless of its ACoS.

Maximum ACoS
Maximum ACoS is the minimum ACoS level at which a word or search term is considered negative (negative exact or negative phrase).


Maximum Clicks
Maximum Clicks is the number of clicks without sales, after which a word or search term is considered negative (negative exact or negative phrase).


SB Exact Negatives
SB exact negatives - a feature that analyzes Search Terms in Sponsored Brands campaigns and suggests adding those that do not match the campaign's target as Negative Exact. This allows you to control advertising spend on irrelevant queries, but it also reduces the level of advertising traffic for such campaigns.
This also enables structured Amazon search exclude words control when recurring irrelevant modifiers appear across multiple queries.
Smart Negative Harvesting Within SalesFortuna's Optimization System
Smart Negative Harvesting is not a standalone negative keywords tool. It is a core component of the SalesFortuna optimization engine responsible for detecting and applying negative keywords inside your Amazon PPC structure.
It supports structured negative keyword research, ongoing PPC negative keyword management, and controlled scaling of Amazon PPC campaigns as one coordinated optimization process.
By continuously refining exclusions and traffic control logic, the system helps advertisers optimize search ads without disrupting campaign structure or scaling strategy.
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