Features: 1. **Effective Formaldehyde Removal**: Our Indoor Air Purifier Gel is specifically designed to absorb harmful gases like formaldehyde, ensuring a safer home and office environment. 2. **Long-lasting Performance**: Once activated, this gel works continuously for up to 3 months, providing 24/7 air purification without the need for constant maintenance. 3. **Easy to Use**: Simply remove the sealing gasket, add the activation solution, seal the lid, and place it near furniture or walls. It's that simple to start purifying your air! 4. **Visual Progress Indicator**: Watch the gel change color as it works to remove formaldehyde, giving you a clear indication of its effectiveness and progress over time. 5. **Safe and Eco-friendly**: Made with deionized water and activated carbon, our gel is a safe choice for your indoor air quality, free from harmful chemicals. Our formaldehyde cleaners contain deionized water and activated carbon. It can quickly purify indoor air and effectively absorb harmful gases such as formaldehyde. Work all day, 24 hours to remove formaldehyde in the air to ensure the safety of the home environment. Its use is simple: carefully remove the sealing gasket of the product. Drop an appropriate amount of activation solution into the gel. Replace the lid and make sure it is sealed. Place the gel next to furniture or a painted wall, watch its color change gradually throughout the day, and can be used continuously for about 3 months after activation. And you can intuitively understand the progress of formaldehyde removal.