Slug collar vs slug pellets
Updated: 23 October 2026
You found a tub in the shed, or lettuce stripped overnight. Slug collar vs slug pellets starts with the rules. Outdoor metaldehyde has been illegal to sell or to use in the UK since 1 April 2022. Ferric phosphate pellets are still sold. A collar in this set is a shield with no bait, and it leaves soil slugs and eggs where they are. The [snail collar comparison](/hub/pest-control/snail-collar) lists the GBP prices. We ran no garden trial. A purchase through our links can earn a commission at no extra cost to you.
You found a tub in the shed, or lettuce stripped overnight. Slug collar vs slug pellets starts with the rules. Outdoor metaldehyde has been illegal to sell or to use in the UK since 1 April 2022.
You found a tub in the shed, or lettuce stripped overnight. Slug collar vs slug pellets starts with the rules. Outdoor metaldehyde has been illegal to sell or to use in the UK since 1 April 2022. Ferric phosphate pellets are still sold. A collar in this set is a shield with no bait, and it leaves soil slugs and eggs where they are. The snail collar comparison lists the GBP prices. We ran no garden trial. A purchase through our links can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Form | Lip or slit | Stated size | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  HanYun HanYun 12 pack plastic slug collars | Raised ring | 45° downward lip | 21 cm side, 12 cm high | 8.4 | about £12.99 | View offer |
| Best value |  Unbranded 25 felt cabbage collars, 15 cm | Flat disc | Pre-cut seam to the centre | 15 cm | 8.0 | about £6.99 | View offer |
| Alternative |  McBlast McBlast 10 slug and snail collars | Raised ring | Curved edge | Ring diameter not stated | 8.2 | about £10.99 | View offer |
On this page
What the ban covers
From 1 April 2022 it has been illegal to sell or use metaldehyde slug pellets outdoors across the UK, including Northern Ireland. Defra ended outdoor use at the close of March 2022 to protect wildlife. Ferric phosphate stayed authorised. AHDB says slugs that eat it stop feeding and often die out of sight within about three to six days. The RHS still tells you to avoid pellets, including organic ones, because other wildlife can be affected.
Which? flags EDTA in some formulations, with an earthworm caution. The last handful from an old tub, spread along a bean row, is still outdoor use. A collar is for a few small plants you will check. Past a handful of damaged stems, a ring is a poor stand-in for what is already in the soil.
What a collar changes
Every collar in this amazon.co.uk set is a raised open ring with a lip, or a flat disc. No listing shows an HSE number, a pellet, or a Soil Association mark. Missing bait is a real difference beside a pellet tub, and it is not a wildlife certificate.
Eggs and slugs in the root zone never meet the lip. The RHS trial at Wisley did not support eggshells, grit, wool pellets, bark, or copper tape, and it did not test these plastic packs. Diameters are on the slug collar buying guide. Where slugs are already under a whole bed, a wall on the surface is the wrong tool.
Pellets and nematodes instead
Ferric phosphate remains the legal pellet. Use it as the packet says, around plants that are being eaten, then stop. A collar on two lettuces misses slugs that never climb. The RHS would still rather see predators, morning watering, barriers, and biological control. Which? Gardening reported good results with ferric phosphate and Nemaslug on slugs in the ground, with weaker results on snails.
UK slug drenches use Phasmarhabditis hermaphrodita in moist soil. The RHS says they are unlikely to work below 5°C, and they are a poor answer to snails. A cold April weekend below that temperature wastes the pack. Choose pellets or nematodes when damage is beyond a handful of stems.
Shed tubs and allotment rules
Leave leftover metaldehyde unused. Emptying the tub on the plot is still outdoor use. Keep the lid on and take it to a household recycling centre that accepts pesticides, or book a licensed contractor. Compost, the hedge bottom, and the drain are the wrong places. If the label is unreadable, treat the tub as metaldehyde until the active is clear.
Allotment rules can be stricter than the shops. Ferric phosphate can be legal to buy and still forbidden on your site, so ask the committee first. If a whole bed collapses after the rings are in, pause, because slugs under the soil, cabbage root fly, and disease can look alike from the path.
Common questions
Are slug pellets banned in the UK?
Metaldehyde slug pellets have been illegal to sell and to use outdoors since 1 April 2022. Ferric phosphate pellets stayed authorised. A plant collar sits outside that ban. It is a plastic or felt shield with no pesticide inside.
Is ferric phosphate under the same ban?
Ferric phosphate sits outside the metaldehyde ban and remains an authorised slug pellet. AHDB describes slugs stopping feeding and often dying out of sight within about three to six days. The RHS still discourages pellets, including organic ones. Which? cautions that some formulations contain EDTA. Follow the packet.
Does a slug collar replace pellets?
A collar stands in for pellets on the plant it surrounds, once the lip or disc sits with no gap and no leaf across the rim. It leaves eggs and soil-dwelling slugs in place. Past a handful of damaged stems, a legal ferric phosphate pellet or a nematode drench matches the wider row.
Do nematodes replace a collar?
Phasmarhabditis hermaphrodita is watered into moist soil and is aimed at slugs. The RHS treats the drench as unlikely to work below 5°C and unlikely to deal with snails. It can also infect slugs that do not eat your plants. Use it when slugs are in the ground across more than a few plants.
Are collars safer for hedgehogs, pets, and children?
A collar from this set contains no pellet, so you lay no bait where a hedgehog, a dog, or a child might meet it. These listings show no HSE number and no wildlife approval, so an empty ring is not a certificate. Check the seal after wind.
What should I do with an old metaldehyde tub?
Keep the tub closed and unused. Outdoor use has been illegal since 1 April 2022, on an allotment and on a home bed. Take it to a household recycling centre that accepts pesticides, or arrange a licensed contractor. Leave it out of the compost, the hedge, and the drain.
Why does the RHS discourage pellets that are still legal?
The RHS is giving wildlife advice while ferric phosphate remains authorised. GOV.UK and AHDB still present it as the chemical alternative after metaldehyde left the outdoor market. Which? reported useful results on slugs in the soil, with weaker results on snails. On a small bed you will check, a collar comes first.
Related pages
Sources
Public UK sources used for this comparison. Shelf prices, stars and review counts are the amazon.co.uk figures captured for these ten listings. Last checked 21 October 2026.
- RHS slugs and snails (retrieved 21 October 2026)
- RHS barrier trial (retrieved 21 October 2026)
- BBC on the RHS slug barrier trial (retrieved 21 October 2026)
- RHS cabbage root fly (retrieved 21 October 2026)
- GOV.UK metaldehyde ban (retrieved 21 October 2026)
- AHDB slug control (retrieved 21 October 2026)
- Consumer Rights Act 2015, section 9 (retrieved 21 October 2026)
- RHS Plants zinc collar (retrieved 21 October 2026)