How to Auto-Hide Spam Comments on Instagram and Facebook (2026)

Why spam comments cost you sales

Every spam comment on a product post does two things. It clutters your comment section with noise that legitimate buyers have to scroll past. And it signals to first-time visitors — the ones deciding whether to trust you — that your brand is not in control of its own space.

On ad posts, the damage compounds. You are paying to amplify that content. A spam-heavy comment section on a paid post actively works against the conversion you are spending money to drive.

The fix is automatic moderation — comments hidden before your audience sees them, without you manually reviewing every post.

Instagram's built-in Hidden Words filter

Instagram offers a native spam filter under Settings → Privacy → Hidden Words. It gives you two options: a default filter that hides commonly reported offensive words, and a custom keywords list where you can add your own terms.

For basic protection it works. But it has real limits that matter for sellers.

What the native filter covers

The default filter catches obvious profanity and reported spam phrases. The custom list catches exact phrases you add manually. Both apply to comments on your organic posts.

What the native filter misses

Ad comments are not covered by the native Hidden Words filter. Comments that use synonyms, misspellings, or context-dependent language slip through. And the list requires manual updates every time a new spam pattern appears.

Why keyword filters are not enough for sellers

Keyword-based moderation assumes you can predict every phrase a spammer will use. In practice, spam evolves faster than any list. A filter that blocks "check my bio" misses "see profile," "visit page," and hundreds of variants that mean the same thing.

There is also the false positive problem. Aggressive keyword lists hide legitimate comments that happen to contain a blocked word — a buyer asking about a product colour that shares a word with a blocked phrase, for example.

For low-volume accounts, manual review is possible. For sellers running ads or posting daily, it is not sustainable.

How AI comment moderation works

AI moderation tools do not look for specific words. They read the meaning of a comment — the intent behind it, the context of the post, and whether the account sending it shows signals associated with spam behaviour.

ReplyMint's MintSense engine runs a classification call on every comment as it arrives. It assigns an intent score and a safety score. Comments that cross the moderation threshold are hidden automatically. Everything is written to an audit log that you can review at any time.

The result: spam patterns you never thought to add to a keyword list get caught. Legitimate comments that happen to use a common word do not get hidden.

For a deeper look at how MintSense classifies comments, see how AI comment moderation works on the product page.

Step-by-step: set up AI comment moderation with ReplyMint

Step 1 — Connect your Instagram and Facebook accounts

Sign up at replymint.app and connect your Instagram Business account and Facebook Page. ReplyMint uses Meta's official Graph API — the same infrastructure Meta provides to approved business partners. Setup takes about 8 minutes.

Step 2 — Configure your moderation sensitivity

Choose your moderation threshold: conservative (high-confidence spam only), balanced (recommended for most sellers), or strict (maximum coverage). You can adjust this at any time from your dashboard.

Step 3 — Let MintSense run

From this point, MintSense reviews every comment as it arrives on your posts and ads. Spam, hate speech, scam links, and toxic comments are hidden before your audience sees them. You can review every hidden comment in your audit log and restore any that were hidden in error.

Moderating comments on Instagram and Facebook ads

This is the section most sellers overlook. Instagram's native Hidden Words filter does not apply to ad comments. If you are running paid posts without third-party moderation, your ad comment sections are unprotected.

ReplyMint moderates ad comments through the Meta Graph API with the same AI engine as organic posts. The moderation fires regardless of whether the comment appears on a boosted post, a traffic campaign, or a conversion ad.

For sellers running consistent paid activity, this is often the highest-value use case — protecting the comment sections you are actively paying to amplify.

Frequently asked questions