Frequently Asked Questions

1. What is the difference between the mechanisms of action of X’mos vs Conventional Aerosol Mosquito Repellents (CAMR)?

In X’mos, the anti-mosquito agent sprayed will evaporate and spread around the room, killing mosquitoes.
In CAMR, the anti-mosquito agent is unable to evaporate properly so that it will settle once it falls to the ground. CAMR can only kill mosquitoes as long as the agent is in the air; therefore it requires a great amount of dosage and gas pressure.

2. What is the difference between the active agent of X’mos and that of regular CAMR?

The anti-mosquito agent of X’mos (Metofluthrin) and CAMR (prallethrin & permethrin) are classified as synthetic pyrethroids, inspired from natural insecticides contained in the chrysanthemum flowers. However, the active agent metofluthrin contained in MAMR has much higher vapor pressure so that it evaporates more easily in the air and does not leave any residue.

3. Why is the volume of X’mos only 83 ml, whereas other aerosol repellents may reach 600 ml?

With 83 ml, MAMR may be used up to 830 pushes of usage. Everyday 4 pushes can lasts for 200 days. This is because its active agent can evaporate automatically, so that its active agent may optimally spread out in the air without falling to the ground, so that no large volume is necessary.


1. Do not spray direct to human body

The product like all pesticides should not be directly applied to the skin. If accidental contact occurs there is likely to be no significant effects apart from a possible slight tingling called paraesthesia.

2. Safe to use for Infant?

Metofluthrin is of low acute and chronic toxicity. There are no special concerns for children or infants however it is always good practice to minimise exposure of infants to any pest control products.

3. Safe to use for pregnant women?

Exposure to high levels of metofluthrin in animal studies was not associated with any significant reproductive or developmental toxicity, so there are no special concerns for pregnant women. However it is always good practice to minimise exposure to pesticides for pregnant women.

4. Safe to use for Pets?

Metofluthrin is unlikely to cause significant effects to animals.

5. Safe to use in aquarium?

Metofluthrin, like most pyrethroids is highly toxic to fish and should not be used where contact with fish may occur. Aquaria containing fish should be sealed so that no water contact with metofluthrin.

6. What happen, if we over-use it? Instead of 4 pushes, we spray more than 10 pushes in small room.

It is unlikely that any significant effect will occur. There may be some slight skin tingling or eye irritation.
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