It is hoped the unannounced visits will severely disrupt the drugs trade.

The Pubs Against Drugs scheme (Pad) has been overwhelmingly supported by publicans.

The dogs, which can sniff out drugs from cannabis to cocaine, are to make regular visits to the 400 pubs taking part.

Leave (drugs) at home - leave them wherever - just don't bring them on to licensed premises

Landlord Gareth Williamson

East Devon licensing officer Karen Mead said landlords were willing to take when first told about Pad.

She said: "They all replied with 100% support. They wanted to actively take part in the scheme and be included in it.

"We had one club owner who was so keen to take part in the scheme that he contacted us and asked us to visit his premises."

About 400 pubs have signed up to Pad

Police will be chiefly targeting amphetamines, ecstasy and cannabis.

But cocaine will also be on the search list.

Publicans say they do not want drugs on their premises.

Landlord Gareth Williamson said: "We don't want it.

"I don't want it. The staff don't want it. The customers don't want it.

"Leave them at home. Leave them wherever. Just don't bring them on to licensed premises."