I have an old house (50+) and a couple of years ago the professional pest control svc was done. It is not cheap... I was looking for the traps in my garden, but the lawn grow over and I cannot find any. What my options? Buy new traps and inserts ( still not cheap), but I will be able to check on it in the future - oh, yeah... I WILL MARK the house where I put the new traps... ! or consider other product? What is the best recomendation for me to do it self?