New smoke alarms going off

[Yulia Garvanovic]

Could please someone recommend what I should do if my tenant's smoke alarms frequently (once in 1-2 months) go off for no apparent reason?

I rent out one half of the duplex I own and live in the other. A few months ago, I replaced all the smoke-detectors in the unit. They all have new batteries.

Can dust in the air trigger them off? The tenant has one dog and 4 cats, and there is quite a bit of dust and fur. 

[Thomas S.]

It could be steam, dust or water causing them to go off or your tenant is smoking.

Have them fan the alarm when it goes off and if it clears it is something in the air. Probably from cooking.