As a still licensed (no not practicing) pest application/inspection tech I can tell you that the key is exclusion. The wafarin blocks are very good. Different brands (I use contract) but the problem with that is rats unlike mice are not curious creatures. It may take awhile for a rat to take the bait whereas a mouse will investigate right away any change. The second problem that blocks or other poison use is that there is a good chance that they will die in the harborage areas thus creating a very nice aroma for your weekend getaway
The best solution is while the RV is parked or stored to place traps in the storage areas and interior areas and use bait stations at the inside wheel areas to highten the chance of the rodent eating before entering the RV. There are bait stations that lock for child safety and the hole is small enough that your pet wont get into it. The exclusion comes into play by placing wire wool (brass or other hard materials) into the cracks and crevices that enter the RV. Rodents do not like to chew on metal wire (would you?
) secondly get rid of the snack foods and such that tend to stay in the RV in between trips and create a wanting bait, and last but not least when looking to see where your weak spots are just "Think like a mouse"
97 Dodge Dually Diesel
2000 Crossroads All American
Wife who loves to travel with arm pit piranha