Which Hay Net Hole Size is Right for Your Horse?

Choosing the right hay net hole size for your horse or livestock can appear as a confusing and overwhelming task. It is an important decision that impacts the wellbeing and dietary habits of your enquire or livestock. This blog post will provide a clear guide to your decision-making process.

2cm Sized Holes

New to our range is the 2cm sized holes in Extra Small, Small and now Medium. Large and 4x4 round bale in knotless netting only.

  • This sized hole is purely for extreme 'expert level' status ponies that can still manage to devour from 3cm hay nets at quite impressive speeds.
  • Only recommended for horses or ponies that have mastered eating from a 3cm hay net.
  • Lucerne for greedy horses or ponies would be good fed in a 2cm hay net.

20mm hole- Deluxe Knotless Extra Small Horse Slow Feed Hay Net

3cm Sized Holes

Great for ponies, mini’s and horses that are very voracious eaters.  Recommended for horses that have already used a 4cm hay net size hay net who therefore understand what slow feed hay nets are about, but need slowing down a little more. 

Great to relieve boredom issues for yarded and stabled horses, or to have as a second net to know that your horse always has something to eat once it empties its first hay net.  For example; you may have a small or medium 4cm hay net and then a 3cm small or medium as a backup so that once your horse finishes the 4cm there is still something for it to wander over and eat in the 3cm, but consumption rate is slowed a little more.

These 3cm sized holes are recommended for really gutzy horses or livestock, ponies, or for very palatable hay (not stalky), and animals that have eaten from a slow feeder before. Lucerne is good hay to feed in 3cm nets if you are worried about the consumption rate. Higher sugar and therefore more palatable finer hays are also a good choice for this size.

Depending on the hay type and how palatable it is, this isn't a common size for goats, cows, or sheep. However, we do certainly have those animals that do use this size hay net hole with quite yummy and palatable hay.

Knotted -

Knotless - 30mm- Deluxe Knotless Small Horse Slow Feed Hay Net

4cm Sized Holes

Our most popular hole-sized net, the 4cm is a good place to start if you are unsure or new to slow feeding.

This 4cm netting hole size is a genuine slow-feeding hole size, but not too frustratingly so, being readily accepted by over 90% of horses. Good for slightly stalky hay, where you don't wish to slow down too much but still reap the rewards of hay saving and increasing the longevity of the hay you are feeding out.

Knotted -

Knotless - 40mm -Deluxe Knotless Small Horse Slow Feed Hay Net

6cm Sized Holes

Great hole size for saving on hay without too much restriction. A very common size for hay that isn’t very palatable, such as low sugar hay and also course and stalky hay. Great for older horses, paddock ornaments in good condition (not overweight or underweight), and also cattle (although we do have customers that have used the 4cm and 3cm round bale nets for their cattle).

This size will not slow their eating very much, but will drastically save on hay wastage by keeping the hay together and stopping it from being spread all over the place, used as a toilet, bed, or from being blown away.

This size is perfect for pregnant broodmares in good condition, or younger horses that you aren't trying to slow feed, just save on wastage. The caution here is to make sure that the hoof size is larger than the netting size. If you are using a 6cm net with young horses, or broodmares with foals at foot, or any other horse or pony, then make sure their feet are larger than 6cm. Otherwise, you MUST use a hay ring for round bales, or if using the smaller nets, hang them at a sufficient height to ensure hooves and net are kept separate.


Knotless - 60mm- Deluxe Knotless Small Horse Slow Feed Hay Net

Generalised Considerations:

Laminitic horses and ponies are generally overweight, therefore 3cm is usually the best sized hay net if they are used to eating from slow feeders. Having said that, if the hay is not that palatable because it is low in sugar, then you may need a 4cm, or even 6cm to help them eat it. We currently have some 3% and now 6% sugar hay (ESC + Starch), and because it is so low in sugar, it just isn't that palatable so I know I am 100% safe feeding it to laminitic horses and ponies in a 6cm hay net.

Weather is a major factor to consider too. In the depths of winter, you may not wish to slow your animals down too much, but still save on wastage. Fibre keeps them warm, so a 4cm or even a 6cm hay net might be a better choice. Whereas Springtime and Autumn is a time of rain and prolific growth and therefore a time of year where 3cm is more suitable.

Another weather consideration that I've personally observed over the years is that the time of year dictates what sized holes the horses will eat particular hay in. For example, we had a low sugar pasture hay that my horses would only eat from a 6cm hay net in winter, however they would eat it just fine from a 4cm in summer.

Type of hay is also important to factor in. Is the hay stalky, if yes then it is best to go a 4cm or 6cm sized hole? If the hay is fine, then 3cm may be a good size.

Palatability is a very important factor to consider when deciding on what sized hole fits best. The more palatable the hay, the smaller the hole size you may be able to go. The less palatable, the larger the hole you will end up needing to go. If you put hay that isn't very palatable into too small of a holed hay net, then a lot of horses will consider it too hard and will not even try. Conversely, if you have a real greedy horse or pony that will eat anything and is locked up with no pick on not so palatable hay, then this type of horse may be an exception to the rule and may still eat through smaller holed nets.

Health Status of the horse is something to also take into consideration. For example if your horse suffers from choke, then 3cm would be the best size, and no more than 4cm.  If the hay is really fine, then you may even consider a 2cm so that the horse doesn't get too big of a mouthful of hay at a time.

Weight / Condition of the Animal? If the horse, pony or livestock are overweight then smaller sized such as 3cm, possibly even 2cm hay net holes would be ideal. If the animals are at an ideal weight, then 4cm is a good size. If the horses are underweight or retired or paddock ornaments where slow feeding isn't needed, just the need to save on wastage, then 6cm is ideal.

An interesting observation that many customers have made is that overweight horses tend to lose weight and underweight horses tend to put on weight when using slow feeders. This phenomenon may be due to the reduced stress on the animals by always having hay available.

Work load is something you want to consider as well. For example, if your horse is in full work and good condition and you have the appropriate hay then a 4cm or 6cm hay net would be ideal as you are not wanting to overly restrict grazing. If your horse is a paddock ornament whose energy needs are not that high, they depending on the hay type, you may go a 3cm or 4cm size hole.

What are you trying to achieve? If you are wanting to JUST save on wastage but have little to no slow feed effect, then choose a 6cm. If you are wanting some slow feeding effect but not to frustratingly slow, then a 4cm is ideal. If you are wanting to slow down a very gutzy eater, then 3cm is the best size for experienced hay net users. If you truly have a SUPER gutzy eater that even manages to master a 3cm, then you may consider a 2cm net or double bagging a 4cm or 3cm net.

Don't over-face your horse! Monitor your animals for how they respond when you first introduce a hay net. Make sure they work out within the first day or so how to eat from the net and eat reasonably well. Things to watch out for is if you do start with a 3cm net and the hay isn't palatable enough then the horse may refuse to eat from the net. This is an unwanted situation and you have over-faced your horse. It doesn't mean your horse will not eat from or accept a hay net, you have just started with too small of a hole. Try a 4cm next.

There are things you can do to assist your horse on introduction to a new net to, like making sure they have some loose hay with their hay net and if they seem to be having difficultly then you can pull some strands of hay through to help them out with the concept. Most horses accept a hay net within the first few hours and hole size is usually the biggest factor in determining acceptance.

Livestock - Our hay nets are commonly used by hobby farmers who don't want their hay wasted and with liverstock such as cattle, sheep, alpaca's and goats. Please be mindful of horns (entanglement) and ear tags that can be rubbed out. We have the odd feedlot also using our nets.

Surprisingly many of these animals are capable of eating from the 3cm sized nets, however 4cm is the most common size. Again it comes down to what you are aiming for! If saving on wastage is your primary concern, then 4cm or 6cm is ideal. If you are wanting to regulate and save on wastage then 4cm is ideal and if you are really wanting to slow them down, then 3cm is suggested.

Some animals may initially spend the first week or two attached to their hay net, but once they know that there is always hay available (if you are fortunate enough to have the correct hay that enables 24/7 feeding, or you are using round bales) then they will settle and lose their anxiousness about feed time. Many customers report happier, less aggressive behaviour of the herd.


If your horses are shod, then we recommend that you must use a hay ring/feeder or barrier of some sort around your square bale and AussieGrazers Round Bale Net or you use some other construction that keeps your horses feet from getting involved with the hay net.  Not recommended for horned livestock. Remove all halters/headstalls from horses so there is nothing to get caught on if your horse loves rubbing its head and body on the bale (like one of ours does).