Does the IKEA MYGGSPRAY work with HomeKit, Alexa, and Google Home?
The MYGGSPRAY motion sensor speaks Matter over Thread.
For app control you need a Thread border router and a Matter controller, such as the DIRIGERA hub. It runs on batteries and is rated IP67 for indoor and outdoor use. It suits HomeKit, Google Home, Alexa, SmartThings and Home Assistant users, with native support through Matter over Thread.
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.