Laser caps are found to be more effective than 5% minoxidil for treating hair loss, and when combined with minoxidil, they are even more effective. Some users report positive results with laser treatments, while others see no change; the devices are FDA approved, but opinions on their efficacy vary.
Minoxidil is highly toxic to cats and can be fatal with minimal exposure. Users suggest switching to oral minoxidil or taking precautions to prevent pet exposure.