How to Disinfect Sex Toys Between Partners: Complete Guide by Material

By Jake Turner  ·  Senior Editor  ·  May 2025

Sharing sex toys between partners is common, but the cleaning standard required is higher than routine post-use cleaning. Disinfection between partners means eliminating pathogens — not just removing organic matter. The method depends entirely on what the toy is made from. This guide covers every practical disinfection option by material, explains the STI transmission risks that make disinfection important, and addresses when condom use is the appropriate substitute.

Why Disinfection Differs From Cleaning

Routine post-use cleaning removes organic matter (lube, natural secretions) and surface bacteria to a level sufficient for your own subsequent use. Disinfection between partners means eliminating pathogens entirely — including viruses — to a level that prevents transmission to a different person’s body.

The distinction matters because: cleaning with soap or toy cleaner reduces pathogen load significantly but does not achieve sterilization. For same-partner reuse, this is adequate. For use by a different person, the risk calculus changes. Pathogens that are present at low levels after cleaning may still be transmissible — particularly viruses, which require lower inoculating doses than bacteria.

STI Transmission via Sex Toys: What the Evidence Shows

Research on STI transmission via sex toys demonstrates real but often underappreciated risks. Studies have found HPV DNA on sex toy surfaces after use; herpes simplex virus has been demonstrated to survive on toy surfaces for up to several hours; bacterial STIs (chlamydia, gonorrhea) can also transfer via toy sharing without adequate cleaning.

The risk varies by pathogen, material type, and time between uses. Non-porous toys that are properly sterilized between uses present negligible transmission risk. Porous toys that cannot be fully sterilized present ongoing risk even after surface cleaning — hence the clinical recommendation for condom use with porous sex toys.

Motorized Silicone Toys: Cleaning + Condom Protocol

For motorized silicone vibrators (LELO, We-Vibe, Satisfyer, Womanizer, Lovense, etc.) that cannot be boiled or subjected to bleach solutions, the recommended protocol for sharing between partners is:

1. Clean thoroughly after use with sex toy cleaner, rinse completely, air dry.

2. Wipe the toy surface with 70% isopropyl alcohol on a clean cloth. Allow to air dry completely — isopropyl provides additional disinfection beyond toy cleaner.

3. For subsequent use by a different partner, apply a condom over the toy for that use.

The condom provides the barrier that prevents direct material-to-body transmission, covering the limitations of cleaning-only disinfection for motorized toys that can’t be fully sterilized.

Non-Motorized Silicone: Full Sterilization Options

Non-motorized silicone dildos, plugs, and similar items without electronic components can be fully sterilized between partners:

Boiling: Submerge in boiling water for 3–5 minutes. This is the most accessible full sterilization method for home use. Kills bacteria, viruses, and fungi. Remove with tongs and allow to cool on a clean surface before use or storage.

10% bleach solution: Submerge for 10 minutes, then rinse extremely thoroughly with clean water. Bleach residue causes irritation — multiple rinse cycles are required. This achieves disinfection equivalent to boiling.

Dishwasher (top rack, no soap, hot cycle): The heat of a dishwasher’s sanitation cycle achieves effective disinfection for silicone. Use without detergent (soap residue is irritating and difficult to fully rinse from silicone).

Stainless Steel and Glass: Easiest to Sterilize

Medical-grade stainless steel and borosilicate glass are the easiest materials to fully sterilize. All three methods above apply — boiling, bleach solution, and dishwasher. Additionally:

Stainless steel can be wiped with 91–99% isopropyl alcohol followed by air drying for fast surface sterilization. Glass can be treated the same way. The non-porous surfaces of these materials mean no residue is absorbed, and sterilization is thorough and reliable.

These materials are recommended for shared toy use in sexual health guidance for this reason — their cleanability is fundamentally superior to any polymer-based material.

TPE/TPR Porous Toys: Condom Use Required

Porous materials — TPE, TPR, “CyberSkin,” SuperSkin, and similar materials — cannot be fully sterilized by any method available at home. Pathogens that enter the pores during use are not accessible to surface cleaning or bleach solutions. Boiling degrades the material. This is an inherent limitation of porous toy materials.

For sharing porous toys between partners, sexual health guidance is consistent: use a condom over the toy and replace the condom between partners. Condom use does not eliminate the transmission risk entirely (the condom can slip or have defects), but substantially reduces it. The most effective approach for shared use is to use non-porous toys.

Anal-to-Vaginal: The Most Critical Transition

The anal-to-vaginal transition is the highest-risk toy use pattern, and it applies to both single users and shared-use scenarios. Fecal bacteria (primarily E. coli) in the vaginal environment cause bacterial vaginosis, UTIs, and other infections. For this transition:

Same person, same session: sterilize between uses (non-motorized) or use a fresh condom over the same toy. Do not transition from anal to vaginal without one of these steps, regardless of partner configuration.

Between partners: the full disinfection protocol above applies — sterilize or use fresh condom at minimum.

When Condoms Are the Right Answer

Condoms are the right answer for: motorized toys being shared between partners (can’t fully sterilize), any porous toy shared between partners (can’t fully sterilize the material), and anal-to-vaginal transitions mid-session. Use a condom sized to fit the toy — most standard condoms accommodate vibrators and dildos up to about 5.5 inches circumference. Larger toys may require larger-size condoms.

A condom doesn’t make a dirty toy safe — clean the toy first, then use the condom as the barrier. The condom covers what cleaning can’t fully address.

Storage After Shared Use

After shared use and disinfection, store toys fully dry in a clean container. The Home in Bold box‘s removable dividers allow you to organize which toys are designated for solo use versus shared use — and the code lock keeps your collection private regardless of household configuration.

Organized Storage for Shared and Solo Toys

Frequently Asked Questions