Infuriating. Environ originally came round over a year ago to fix a mouse problem. They identified a number of holes and filled them in. A few months back we got a new washer-dryer fitted which evidently reopened one of the holes and unsurprisingly mice returned. We therefore asked Environ to come back and do another survey - we have now had three visits and, for some reason, they continue to send out engineers that are only equipped or instructed to do a survey and cost a job, not to actually do the proofing. Continually told we will be called back and end up having the same conversation with their HQ. Have paid them £200 thus far and have to contend with mice on our kitchen surfaces - which is grim. Hopefully they'll read this and decide to actually do something. In short, can see there are plenty of people with good experiences but don't be surprised if your case slips through the cracks and comms/service deteriorates once payment has been made (offers of free visits are pretty empty when you've already paid for a service that's done nothing).