David installed weep hole inserts a physicial barrier & did a rat & mice treatment to my home 8 months ago, the rodents have not returned. I live in a new estate in Epping North were there is a problem with rats & mice, i was a bit unsure about the weep hole inserts, but i now am very happy i got them install. The mice have gone & i have very few spiders & insects in the house now. David said the weep inserts would stop the mice, spiders & other pests from coming into my home. I would recommend David to everyone.