MRK is phenomenal and I wish we had found them sooner. We've been using them since Winter 2020/2021. They are very responsive, they know what they're talking about, and they are customer focused. MRK takes my concerns about my pets seriously (some companies use harsher chemicals). Example of the customer service: Found a mouse caught on a glue trip after a long weekend away, called on a Sunday, and owners picked up, and were here within the week. Dave and Ryan are awesome. Great family run business. And for anyone curious, they serve Detroit too which is where I live.