Weather Blox XT contains the active ingredient Brodifacoum and can take 1-5 days to kill and it is a single feed bait (meaning that rodents only need to feed one time to have a lethal dose build up its body).
Ditrac contains the active ingredient Diphacinone and can take 5-7 days to kill and requires the rodent to feed multiple times to have a lethal dose build up in its body.
It would all depend on the size of the dog and how much they ate. Anytime you suspect a pet has consumed a pesticide, rodenticide, or any kind of chemical or product, you should call your vet immediately.
The WeatherBlok XT Rodenticide should be placed in tamper resistant bait stations within 50 ft of the building. The best way to get rid of the rats that are already in your attic is to trap them with rat snap traps, rat glue boards and/or live catch rat traps. We do not recommend using poison baits indoors because after the rats eat the bait they may go into an inaccessible area to die causing a terrible odor and possibly even a secondary insect infestation (it is a myth that there is a poison bait that will cause the rats to dry out and not smell or to leave the house in search of water). It is important that you place the traps directly in the rats travel path and bait them with an attractive bait such as nuts, dog kibble, canned tuna or peanut butter. Be patient, it could take several days or even a couple of weeks before the rats are comfortable enough with the traps to approach them and be captured. After you have eliminated your current infestation, you must take the time to exclude rodents from entering your home in the future. Please take a few moments to read our article: How to Rodent Proof Your Home
Talon Weatherblok XT Rodenticide should be used in a tamper-resistant bait station. It can be used in the rat and mouse bait stations linked below. (These Do NOT fit into the Aegis Mouse Bait Station, Protecta Mouse Bait Station or the Protecta RTU Mouse Bait Station).
According to the product label, Talon Weatherblok XT Rodenticide can be applied in food processing facilities. When used in USDA-inspected facilities, this product must be applied in tamper-resistant bait stations. Do not broadcast bait. Terad3 Ag is an OMRI Listed and would be an alternative, still used in stations.