Karlsten Ant 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

Good price.We have lots of ants every summer.

Does the job but be generous when applying

relatively poor value for money as a 'refilling product' for the 'squirters', (though also better value for money than the 'squirter' size product), considering its effectiveness - which is low to medium, but better than nothing.It remains to be seen how effective a product it may be - long term - as an ant/insect repellant (for use on surfaces NOT used for food). Do NOT spray on 'soft furnishings', plastic or wooden food cutting boards, or any surfaces or containers used for food: like food container boxes with lids, plates, dishes, jugs, cutlery or utensils, whether they be metal, glass, plastic or ceramic.