I will agree Cab fresh didnt work for me, caught one right next to the package with a trap. I put steel wool in the holes next to the plumbing. two weeks later I caught another one. So i removed the steel wool and foamed the holes. I went to the other side of the of the motor home and found the drain for washer and dryer and foamed every hole on that side.This is what I did with my 5th wheel and never had any problems. I do have glue and steel traps in all the bins just in case, and by the jacks. I do the same as others and check them once a week.