Meth testing kits - Test hard and soft surfaces for residue - Test sweat or saliva because children can't always tell about exposure
This monitor requires data service from a cell phone provider. Data only service is available for as low as $1 a month. Here's an article about some of the least expensive plans available: LOW COST DATA PLANS
Order P Alert Meth Monitor
This device monitors up to 1000 sq. ft. and is designed to be installed in rental properties, hotels, Air BNB, rental cars to help protect your investments. A text alert is sent if the deice is tampered with. It can also provide evidence for individuals to prove that they are being poisoned by neighbors behavior. The P Alert is less expensive than professional testing by a properly accredited industrial hygienist. Costing $411 + $15 shipping it is an inexpensive investment compared to the possible savings in health and property damage. A separate text only cell service is required for each P Alert. Text only plans are available from most cell carriers at very low rates.
Batteries last a year before replacement is required. The weekly report provides: battery life; average weekly air quality reading; peak weekly reading; temperature. P Alert is covered by a one year replacement warranty.
$385 + $20 shipping