[SIZE="6"] My house was empty for 5 years before we bought it. After about the 1st year I started noticing ants. They got so bad I had to call Massey - I had tried everything. After several treatments - the final solution was they were in, an inside wall - so he put stuff in the outlets (after removing them). They are quite diminished now - I put out glue traps to see how many I catch. I am down to about 8 in a month - thank goodness Massey comes and treats as many times as they do without extra charges.