KarlstenAnt Killer Spray 5L – Extra-Strong Cypermethrin Formula for Indoor & Outdoor Use – Fast-Acting, Long-Lasting Pest Control – Kills Red & Black Ants, Stops Infestations

Works well on initial application kills everything straight away. Don't know if it kills the nest or how long the effect will last only time will tell but it's sorted my initial problem out. I use a battery sprayer that you can buy on Amazon just drop the filter in the container and away you go makes it easy to apply. Seems to be very effective on all kinds of bugs as well as ants.

Seems fairly effective and after soaking the lower bricks of our walls twice, we've not had any more ants indoors. We live on sandy soil area which may even be an ant heap in disguise.

to use this product a spray system would be handy . I have used it on anumber of areas of problem ants and as yet 10 days I have seen no trace of ants returnig. exellent product

This is the second time we have bought this ant spray and it seems to keep the ants under control.We spray around the outside of the house with a 5 litre garden pressure sprayer and it keeps the ants at bay.Last year we arrived home from holiday to find an infestation inside the house in the bay window.We had bought a five litre tub of it before we went but not used it.We sprayed the infestation and got rid of them, havingsprayed the carpet inside, pulled up the carpet in the bay window and sprayed the underlay and screeded floor.Ever since, we have sprayed around the house, particularly the bay window and had no re-infection and it seems to keep them under control.This is the third 5 litre tub we have bought of this and have been very pleased with the results

Could be stronger , doesn’t last long

I've tried a few products to kill ants and they've all worked but none as quickly as this, the other products I have used are well known brands.The ant killer didn't kill on contact but you can see within 10 seconds that you've got the ant. I hate the idea of killing anything but once they start causing problems getting into the house and or nipping people then they have to go and this seems to act quicker than anything I've used.Excellent product that does what it claims and I will use again if I have to but 5 litres should last a while.

Does the job but be generous when applying

I had a terrible ant infestation around the time of Flying Ant Day which I realised last longer than a day. Tried various High St brands of ant killer but nothing worked. I spoke to an Expert Pest Remover and he very kindly told me to buy this rather than him coming out and thankfully it worked. It was far too much for what I needed but if it happens again I'll at least have it on hand.