Raid Plug-In Ineffective Against Mosquitoes – Requesting Refund

I purchased a Raid plug-in mosquito repellent from Migros, hoping it would protect my child from mosquito bites at night. However, despite using it twice, it hasn’t killed a single mosquito, and my child continues to get bitten every night. This product has proven completely ineffective. I still have the receipt and would like to return it, as I feel I wasted my money on something that doesn’t work as advertised. I’m disappointed that Migros would sell such an ineffective product and urge them to reconsider carrying it. I request a prompt refund for this purchase.