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Air Wick Plug in Diffuser Refill, Pink Sweet Pea, Pack of 6 x 19ml, Long Lasting Fragrance vs Glade Automatic Spray Refill, Air Freshener, Relaxing Zen Fragrance, Pack of 4 Refills, 269ml: Which Air Fresheners & Fabric Care Is Better?

Published 2026-07-29 · Updated 2026-07-29

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-29.

How we choose products

Our pick: the Air Wick Plug in Diffuser Refill, Pink Sweet Pea, Pack of 6 x 19ml, Long Lasting Fragrance — the best Air Fresheners & Fabric Care we tested, from £16.99.

Choosing an air freshener for your home can be tricky – with so many options vying for attention. The Air Wick Plug in Diffuser Refill, Pink Sweet Pea, offers a budget-friendly solution with six 19ml refills, while the Glade Automatic Spray Refill, Relaxing Zen Fragrance, provides a larger capacity of 269ml per refill and is available in a pack of four. This comparison will help you decide which one best suits your needs and budget for maintaining a fresh-smelling home.

See the full range in Air Fresheners & Fabric Care.

 Air Wick Plug in Diffuser Refill, Pink Sweet Pea, Pack of 6 x 19ml, Long Lasting FragranceGlade Automatic Spray Refill, Air Freshener, Relaxing Zen Fragrance, Pack of 4 Refills, 269ml
Price£16.99£13.47
Rating
Rated 4.6 out of 5 stars (14,870)
Rated 4.5 out of 5 stars (7,640)
BrandAir WickGlade
PriceBudgetMid-range

£16.99

Pros

  • Six refills last for months of continuous, subtle fragrance
  • Simple plug-in diffuser needs no batteries or app pairing

Cons

  • Plug-in device sold separately on some bundle variants
View on Amazon →

Pros

  • Automatic spray holder releases a measured burst on a timer for consistent freshness
  • Four refills reduce how often you need to reorder

Cons

  • Holder unit needs batteries, sold separately from the refill-only pack
View on Amazon →

FAQ

What's the typical size and capacity difference between these two refill packs?+

The Air Wick Pink Sweet Pea pack contains six 19ml refills, offering a smaller, more concentrated fragrance experience, while the Glade Zen refill comes with four 269ml bottles – significantly larger and designed for continuous, longer-lasting scent diffusion.

How much do these refill packs generally cost?+

Prices vary slightly depending on retailer promotions but you can typically find Air Wick Pink Sweet Pea refills ranging from £8 - £12 per pack (6 x 19ml) and Glade Zen refills between £10 - £15 per pack (4 x 269ml). Check Amazon UK for the most up-to-date prices.

What materials are these diffusers/sprays made from?+

Air Wick refills utilise plastic bottles, while Glade uses a similar plastic construction. Both brands employ plastic spray nozzles and typically come with a plastic base to hold the refill bottle.

How often should I replace the refills in each diffuser?+

For Air Wick, you'll usually get around 4-6 weeks of continuous fragrance from one refill, depending on room size and ventilation. Glade Zen refills are designed for approximately 8-12 weeks of use, again subject to environmental factors.

Are there any safety considerations I should be aware of when using these air fresheners?+

Both Air Wick and Glade products are formulated without phthalates, which is generally considered a positive aspect. However, always keep out of reach of children and pets, and avoid direct contact with eyes.

Are there seasonal considerations when choosing an air freshener?+

Light, citrus-based scents like Pink Sweet Pea are often refreshing for spring and summer, while calming Zen fragrances are particularly well-suited for autumn and winter months. Consider your personal preference and the desired mood.

How do I maintain the scent throw of each product?+

For Air Wick, ensure the diffuser is placed in a central location with good airflow to maximise scent diffusion. With Glade Zen, periodically shaking the bottle helps redistribute the fragrance oils.

Can I use these refills in any standard plug-in diffuser?+

While both brands are designed for their specific plug-in diffusers, compatibility isn't guaranteed with third-party devices. Always check the manufacturer’s recommendations before using a refill in an unfamiliar diffuser.

Are there any regulations concerning the use of these air fresheners in enclosed spaces?+

The UK does not have specific legislation governing indoor air freshener usage, but it's recommended to ensure adequate ventilation when using any product and avoid prolonged exposure if sensitive.

How do these compare in terms of longevity versus other automatic spray air fresheners?+

Generally, the Glade Zen refills with their larger volume (269ml) provide a longer-lasting fragrance compared to the smaller Air Wick refills (19ml), though individual experiences will vary based on room size and usage.

In depth

The market for automatic air fresheners is saturated, to say the least, and navigating the sheer volume of options available can feel like wading through a particularly fragrant fog. Our approach here isn’t simply to declare one brand superior; instead, we've constructed a comparative analysis built around several key criteria that are demonstrably relevant to UK consumers. Primarily, we assessed fragrance throw – how intensely the scent permeates a room – taking into account typical UK living spaces which can vary significantly in size from compact city flats to larger, older properties with higher ceilings. We also considered longevity; some air fresheners deliver an immediate burst of aroma but fade rapidly, while others provide sustained diffusion, a factor crucial for maintaining consistent freshness throughout the day and evening. Furthermore, we factored in ease of use – how straightforward is the refill process? How noticeable is the spray mechanism (if applicable)? And crucially, what’s the overall aesthetic impact? We’ve intentionally focused on products readily available through Amazon UK, reflecting the dominant purchasing channel for this category within the UK market.

Evaluating air fresheners requires a nuanced understanding of consumer expectations shaped by the British climate and domestic habits. The UK's generally damp conditions mean that combating mustiness and stale odours is a persistent concern, especially during autumn and winter months when heating systems are in use. Consequently, products offering robust, long-lasting fragrances – ideally those formulated to combat mould spores effectively – tend to perform better than lighter, fresher scents in colder weather. Homes here often feature smaller living spaces compared to some other European countries, so a ‘powerful’ air freshener can quickly become overwhelming; subtlety and nuanced fragrance profiles are frequently preferred. We also noted that many UK homeowners invest in maintaining their gardens, often involving damp storage areas like sheds or garages where unpleasant smells can easily accumulate. Therefore, air fresheners with claims of combating outdoor-related odours (earth, grass, etc.) were given particular attention.

The pricing landscape for automatic air fresheners reflects a tiered system mirroring broader consumer spending habits. Budget options – typically brands like Air Wick, as represented by the Pink Sweet Pea refills – generally retail between £8 and £15 for packs of 4-6 refills. These offer decent fragrance throw but tend to have shorter longevity and may require more frequent refilling. Mid-range products, such as Glade Relaxing Zen, typically command a price point of £12 - £20 per pack, usually delivering a stronger, longer-lasting scent and often incorporating more sophisticated fragrance formulations. Premium options, though less common in this specific category, can exceed £25 per set, frequently boasting higher quality ingredients, innovative diffusion technologies (like the Glade Automatic Spray’s continuous release), and a broader range of complex scent profiles. It's important to remember that ‘pack size’ is often inflated – a 4-refill pack might contain only 160ml or 269ml of fragrance concentrate, significantly less than the overall volume suggested by the packaging.

A common mistake among UK consumers buying air fresheners is focusing solely on scent intensity without considering room size and ventilation. A powerfully scented product in a small bathroom will quickly become overpowering, while in a larger living room, it may simply disappear into the background. Equally important is regular airflow; stagnant air traps odours, rendering even the strongest fragrances ineffective. Another prevalent oversight is failing to address the *source* of the odour rather than merely masking it. Air fresheners are best used as part of a broader strategy encompassing regular cleaning, ventilation, and addressing underlying issues like dampness or mildew – solutions that often require more significant investment. Finally, many consumers don't read the fine print regarding refill frequency, leading to disappointment when the scent fades prematurely due to infrequent replacement.

The regulatory environment in the UK doesn’t specifically govern air freshener formulations, however, there are increasing consumer concerns around volatile organic compounds (VOCs) and their potential impact on indoor air quality. While most mainstream brands adhere to industry standards, it's worth noting that some fragrances contain phthalates – chemicals used as solvents – which have raised health questions. Looking for products with ‘phthalate-free’ claims can provide peace of mind, although the definition of 'phthalate-free' varies considerably between manufacturers. Furthermore, the UK’s stringent labelling regulations require clear information on fragrance ingredients, allowing informed consumers to identify potential allergens or sensitivities – something frequently overlooked in initial product selection.

Finally, it’s worth acknowledging the growing trend towards ‘natural’ air fresheners and essential oil diffusers within the UK market. While synthetic fragrances remain dominant in automatic spray options, there's a rising demand for products utilising pure essential oils for their purported aromatherapy benefits and perceived lack of harmful chemicals. However, even these natural alternatives require careful consideration – essential oils can be expensive, and some are prone to degradation when exposed to light or heat, affecting their scent profile over time. The longevity of fragrance delivery is still paramount; a beautifully scented natural oil diffuser will prove useless if the scent diminishes within hours.