Each Plug Hub Starter Kit includes 1 refillable Plug Hub™ Warmer and 1 liquid-free Plug Hub™ refill.Amount of kits varies based on bundle selection.

For best results, use in a medium-sized room. For a stronger scent experience, use in small spaces.

Enviroscent Plug Hub™ scent refills are only intended to be used with the Enviroscent Plug Hub™ warmer. We do not recommend use with any other warmer. 

Slide the Enviroscent refill into the Plug Hub™ warmer with the refill's leaf mark facing forward. Press the scent refill down firmly until a "click" is heard. Plug into outlet to begin scenting. For optimal performance, place upright in a vertically oriented outlet.

Plug Hub™ Refills last up to 45 days. We recommend changing them out in that time or when scent is no longer detected. For a seamless scent experience plus 15% off refills, we recommend creating a Refill subscription.

If you love the kits in your Plug Hub™ bundle, a Plug Hub™ refill subscription is perfect for you! Subscribers save 15% off all subscription items, free shipping on orders $20+, and more.

You can create a subscription for Plug Hub™ Refills via "Subscribe & Save" on a 30, 60, or 90-day frequency. And it's easy to change scents, pause or cancel.

Visit our subscription page subscriptions to learn more about subscriber perks. Limited edition and/or seasonal scents are available for subscription but are subject to availability.

Sustainability is very important to us. Our packaging and scent refills are made from FSC-certified, sustainably sourced paper. Our Plug Hub™ scent refills (once removed from their plastic shell) and packaging are recyclable. The Plug Hub™ warmer is reusable, but not recyclable. Make sure you check your state's recycling laws first.

Our products are made from FSC-certified, sustainably sourced pulp & paper, silica, starch, a very small amount of Bitrex (a safe, non-toxic bittering ingredient to keep little ones from eating it) and fragrance. We list the ingredients in our fragrances on Smartlabel.org.  

Safety is very important to us. Enviroscent's safety standards follow criteria from the EPA Safer Choice program, the higher standards in Europe, plus our own even higher safety criteria. We restrict ingredients like toxic air contaminants, reproductive toxins, endocrine disruptors, CMRs (carcinogenic, mutagenic or reprotoxic chemicals), respiratory sensitizers and other hazardous ingredients that can cause harm. We call this our “Never List” because they never go into or come out of our products. Visit our Why Enviroscent page to learn more.  

We’ve researched & formulated our products to minimize or eliminate any essential oils that might make your pet sick, plus all our scents restrict ingredients unsafe for pets (or people). Our Plug HubTM is a paper-based form that doesn’t have any liquid that can spill or be ingested by four-legged friends, nor does it send any fragrance mist or droplets into the air where it can land on their fur.  

 

Every paper product is coated in Bitrex, a safe bittering ingredient that prevents products from being accidentally eaten. Overall, we recommend speaking to your vet about any individual concerns you may have, and to keep scented products out of the reach of little ones, furry or otherwise. You can also view our full disclosure of ingredients here at Smartlabel.org.